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Minggu, 06 November 2011

Avira Free Antivirus

The bottom line: An aggressive redesign aimed at making its best-known suite more accessible than before, Avira Free Antivirus 12 combines fast scans with above-average protection for a solid security combo.
Review:
Free antivirus maker Avira debuts a laundry list of changes in its latest major update, basically repositioning the suite to remain competitive in the face of tougher competition from other free security suites and a renewed emphasis on performance from paid competitors. From the new breezy installation to the modernized interface and reputable security, the suite has a lot going for it.
However, it notably lacks some features that many people consider basics even at the free level, so this version may only wind up appealing to existing Avira users and fans.
Longtime Avira fans will note that the suites also have undergone a bit of a name change. The product title "AntiVir" has been dropped, as Avira AntiVir Personal becomes Avira Free Antivirus, Avira AntiVir Premium becomes Avira Antivirus Premium, and Avira Premium Security Suite becomes Avira Internet Security. While product-specific names may work for some companies because of legacy associations, such as the Norton product from Symantec, new user confusion has likely forced security suite makers to streamline their operations.
The suites have also skippped version 11, perhaps driven by a Spinal Tap-esque fear of exploding amps, and gone straight to version 12. It's also possible that the company was thinking of aligning the version number with the release year, as most security suites released in the fall have version numbers that reflect the coming year.
Installation
Getting into Avira has never been easier, as version 12 debuts a two-click install. The company says that it developed the two-click installation as part of its "less is more" strategy, where it offers the same level of protection as before without the hassle. Of course, that's a tacit acknowledgement of prior problems.
Anyway, the new install is the simplest of the major free security suites. The two-click process will auto-detect competing security components and remove them, so be warned if you think you're going to be more secure by running two overlapping AVs. Avira won't let you.
Another click will take you past the Ask.com toolbar and search engine re-direct, but at least Avira is polite: it's an opt-in, not opt-out, experience. The toolbar screen itself is a bit unclear: it's actually Avira's WebGuard feature, powered by an Ask.com search engine that's part of the toolbar. There's also an option to have Ask.com become your browser's default engine, although that's not checked by default.
At the end of the installation process, Avira will begin a quick scan. On our test machine, it took about 1 minute, 25 seconds to complete, a completely reasonable wait to endure before the suite is ready to go.
Interface
The new interface is simple and mimics that of many competitors. A left nav shows you your tools, while the center pane focuses on a deeper dive into your security. New on-off buttons make it easy to toggle features, although it's noteworthy that the free version is quite restricted when compared with the free competition.
The new main interface for Avira Free Antivirus 12.
(Credit: Screenshot by Seth Rosenblatt/CNET)
A red banner with the program name serves as a wrapper to anchor the suite, with a Windows XP-style menu bar above it. It doesn't look bad in Windows 7, although it is definitely archaic. The only feature that you can't reach from any other part of the interface except the menu bar is the Help menu.
The main interface is the Status window, with a green check box letting you know when you're safe. It turns to yellow when there are security tasks to perform or when you've turned off a feature, like real-time protection. It turns red when there's something mission-critical that requires your attention.
Below that, you've got two categories: PC protection, and Internet protection. What this really means is that the former protects you from threats locally, while the latter guards you against new threats from attacking you. Under PC protection, you can toggle your real-time protection, manually run a scan, start an update, or upgrade to a paid version of Avira. Use the gear icon next to each option to open the configuration window, which has its own slider in its upper-left corner to quickly change between the standard view and expert mode.
One hint about the system scanner option from the left nav: this is where you would go to initiate specific types of scans, or scans on specific parts of your computer, such as a rootkit scan in C:/Windows. For a generic scan, use the Scan System option from the Status window.
Under Internet protection, you only get one option in Avira Free: Web protection. If you chose to not install the toolbar, then this entire section will appear grayed out.
It doesn't sound like much, but that's the point. This is the easiest-to-use version of Avira yet.
Features and support
This is one area where the changes Avira has made are not so apparent. Longtime users of Avira Free are not likely to recognize much new. The scanner checks for virus, Trojans, rootkits, and adware. There's a generic threat removal engine, but Avira--like many security suites--is much better at preventing threats from infecting you, rather than removing ones you've already got.
The advanced options menu doesn't contain much that's new, either, but the layout is new, and it's quite easy for a savvy person to drill deep into security settings and either extract the information they want or set a very customized level of security. This includes scanning as Administrator from the main interface, a window showing realtime scan performance, configuring how to scan of archives, and a restart reminder in case you enjoy that kind of automated nagging.
The engine powering the scans has been improved, too. Your Hosts file is protected by default, and resource usage has been slashed. And after the daily virus definition file update, Avira still takes over your screen with a pop-up asking you to upgrade.
The company told me that it kept it because its users like it. According to its market research feedback, the pop-up apparently reminds people that they've been protected. Be that as it may, I find it an unnecessary distraction that blocks me once a day from doing something more important than clicking away an ad.
If a problem is discovered, a one-click Fix problems button appears at the top of the Status window. Click it, and even if the fix is something as simple as reactivating a deactivated module, the program will do it for you.
The WebGuard feature, available only if you install the Avira toolbar, takes a more aggressive approach to detecting sites that could be hosting malware before they load on your computer. This is not unlike Avira's competitors. However, for the performance cost to the browser for a toolbar, search result ratings would be a nice compensation. Too bad they're not offered.
Avira 12's WebGuard toolbar.
(Credit: Screenshot by Seth Rosenblatt/CNET)
Features-wise, the free version provides the kind of security that most people will be comfortable with. For people who want more, Avira Antivirus Premium 12 ($29.99 for a one-year license) comes with a suspicious behavior guard for when programs or files that might be trusted act in an unsecure manner; the silent/gaming mode for fullscreen use; and live telephone support. Avira Internet Security 12 ($49.99 for a one-year license) rolls in parental controls; an e-mail spam guard; antiphishing measures; and a firewall that I found to be obnoxiously chatty and intrusive.
While the firewall and parental controls are always relegated to premium status, it seems quite niggardly of Avira to reserve the silent/gaming mode for premium users, when competitors don't and all the while insisting upon a pop-up that can interrupt any activity you're using your computer for.
Performance
Avira's performance in the past has been hit or miss, with strong detection rates but high false positives. Avira's been doing a lot of work in that area, though, and this is one of the best-performing versions of Avira that we've seen.
Avira Free Antivirus 12 shares the same detection engine as its premium upgrade siblings, Avira Antivirus Premium 12 and Avira Internet Security 12, so all three are discussed here.
In a real-world test, Avira completed its initial scan during installation in 1 minute, 25 seconds. However, the new Avira still does not whitelist known safe files on your system, so repeated scans will check out the same file, even if it's got a hash that indicates that it's been unchanged since the last scan. The Full scan averaged 1 hour, 36 minutes over three installs, which is an appropriate benchmark for such a resource-intensive scan.
CNET Labs' benchmarks found that Avira benchmarked well in most system tests, but with room for improvement in the critical test of boot-time impact. Note that while last year's benchmarks were tested on the basic installation of Windows 7 x64, CNET Labs is now using a Windows 7 x64 test bed running Service Pack 1. So while results are more comparable than they would be with, say, a Windows XP computer, there's still a notable difference between the test computers.
Avira Internet Security 12 performed had one of the smallest impacts on computer start up, slowing it down only by 13.1 seconds when the average was 25.3 seconds. However, Avira Free Antivirus and Avira Antivirus Premium slothed along and added nearly 60 seconds each, the two worst suites tested so far this year.
Once we get past that poor first showing, Avira tested better than average on nearly every system test we looked at. As the chart below shows, shutdown time, scan speed, and the in-use system tests of MS Office performance, iTunes decoding, and were almost always better than average, often by a lot. Avira was weak on the Cinebench test.

Security program Boot time Shutdown time Scan time MS Office performance iTunes decoding Media multitasking Cinebench
Unprotected system 40 6 n/a 395 120 342 17,711
Average of all tested systems (to date) 65.3 15.4 1,114 415 125 347 17,106
Avira Free Antivirus 12 98.8 12.4 860 409 125 345 17,000
Avira Antivirus Premium 12 100.3 12 1,026 407 125 342 17,125
Avira Internet Security 12 53.1 13.7 959 407 124 346 17,030

Note: All tests measured in seconds, except for Cinebench. On the Cinebench test, higher numbers are better.
Independent testing agency AV-Test.org has marked acceptable scores for Avira Premium Security Suite 10 (Avira Internet Security as of version 12) during the first two quarters of 2011. On a Windows 7 computer during Q1, Bitdefender scored 4 out of 6 on Protection, 3.5 out of 6 on Repair, and 4 out of 6 on Usability, for an overall score of 11.5 out of 18, just clearing the minimum of 11 for an AV-Test.org certificate.
In the second quarter, on a Windows XP computer, the same suite did slightly better. The suite hit 3.5 out of 6 on Protection, 4.5 out of 6 on Repair, and 4 out of 6 on Usability, for a total of 12 out of 18. However, at that point Avira hadn't updated the detection engines in a while.
When AV-Test.org tested Avira Premium Suite Security 10.2 in July and August of 2011, Avira climbed a bit higher, with a 4 out of 6 on Protection and Repair, and 4.5 out of 6 on Usability, for a total of 12.5 out of 18.
Note that AV-Test.org defines its categories as follows: "The 'Protection' covers static and dynamic malware detection, including real-world zero-day attack testing. In case of 'Repair,' we check the system disinfection and rootkit removal in detail. The 'Usability' testing includes the system slowdown caused by the tools and the number of false positives."
Third-quarter results aren't in yet, but results shared by AV-Test.org with CNET indicate that along with the new name, the suite has made some significant improvements in the level of protection offered. It notched a 99.73 percent malware detection rate, higher than the overall average rate of 99.29 percent in September 2011 certification testing. The suite was able to remove 87.5 percent of active malware infections, slightly higher than the industry average of 84.6 percent. AV-Test.org did not test or did not release numbers for rootkits. In AV-Test.org's zero-day attacks test, Avira Free blocked 92.7 percent of threats, while the two premium suites blocked 96.4 percent of the attacks, compared to the average September 2011 certification results of 92.7 percent. The suite also did not find any false positives against more than 330,000 samples.
In short, AV-Test.org found Avira 12 to be more effective than Avira 10, although there were suites both paid and free that did better.
The most recent AV-Comparatives.org Whole Product test, which looks at on-demand scanning, retroactive tests, and "real-world" guards including cloud-based protections, puts Avira Premium Security Suite 10 in the top four suites tested. The August 2011 test found that it blocked 98.4 percent of attacks and threats thrown at it, only behind Trend Micro's Titanium and Symantec's Norton. Meanwhile, looking at Whole Product test results cumulatively from January 2011 to August 2011 found that Avira 10 did far worse, coming in ninth with a 97.0 percent success rate. So, while Avira started the year off rough, it has clearly made strides to improve and that bodes well if you're considering using version 12.
A third testing lab, Dennis Technology Labs, had much worse news for Avira from its January 2011 test. In its test of high-end suites, including Avira Premium Security Suite 10, Dennis Labs placed Avira second to last out of 11 suites. Avira had an Accuracy score of 28 out of 100, but this did not include false positives. The Total Accuracy score, which does include files that are marked as threats but in fact are not, also put Avira at second to last with a score of 64.5 out of 150. Avira struggled with the lab's Protection test, earning only a 66 percent, second to last and well below the average of 84 percent. The bottom line here is that Dennis Labs and Avira 10 did not mix well, at all.
It's fair to conclude that according to third-party tests, Avira 10 tested weakly at the beginning of 2011, but has made strides to improve and should not be discounted. Still, movement in the right direction is not the same as consistent performance, but things are looking up for Avira at least when it comes to protecting its customers.
Conclusions
Avira Free Antivirus 12 is a solid effort by one of the most popular, and therefore most trusted, security suite makers to address an ever-changing and increasingly more dangerous threatscape. It offers solid and effective free protection, with a newly accessible interface, but it lacks some of the competitive features that other free suites give their users. Also, depending on your system, you might have to prepare for much longer computer startup time, and there's that daily pop-up nag to contend with. We're glad to see that Avira has no intention of straying behind the pack anymore, however, we expected more from this long-overdue update.

Publisher's Description

From Avira:

If you don't have virus protection, your PC will be infected with malware in a matter of minutes. Avira Free Antivirus 2012 offers basic protection against viruses, worms, Trojans, rootkits, adware, and spyware that has been tried and tested over 100 million times worldwide. What's more, it is available free-of-charge. It not only protects against these types of malware, but offers as well, in case of an infection, the possibility of removing viruses very easily and repair the system automatically.
Functions: AntiVir stops all kinds of viruses; AntiAd/Spyware protects against adware and spyware; AntiRootkit detects hidden rootkits; QuickRemoval removes viruses at the push of a button; NetbookSupport support for computers with low resolution; AHeADTechnology detects even unknown viruses by their profiles; AviraSupport there for you in person when questions arise.
Click to see larger images

Avast Free Antivirus

he bottom line: After the last version's radical new interface that brought this security stalwart into a visual comparison with its competitors, Avast looks to the future with version 6's edgy improvements.
Review:
Avast made great strides in its previous update. Version 5 set the stage for the modern, massively popular, and free security suite with a new interface that ditched a quirky, late-'90s jukebox style for a more polished look. Easier to navigate, it also became easier to add new features.
Make no mistake; Avast 6 adds features both big and small. Some that had previously only been available to paid upgrade users are now free for all versions, and newer features have been seamlessly added to the interface experience. If you're familiar with Avast 5, upgrading to Avast 6 won't be that big of a leap.
Installation
Installing Avast is a painless process that compares well against its free competitors like AVG, although--like those competitors--it's much slower than installing paid programs like Trend Micro, Kaspersky, or Norton.
Some items of note during the installation that will come up later in the review: to completely avoid the new Windows 7 and Vista desktop gadget, or the new WebRep browser add-on, you must choose the Custom install option and uncheck those here.
Automatic installation of these features is frowned upon, although Avast does provide a clear method for uninstalling them. It's just not as simple as a check box that gets its own installation window, since you have to go through the Customize menu, which makes the auto-install sort of surreptitious.
On the plus side, installing Avast doesn't require a reboot, and using its uninstall tool we detected no remnants in the Registry or on the desktop. Avast has said that the installer has shrunk for all three versions by about 20 percent, although it's still a large download at around 57MB for the free version.
Interface
Avast 6's interface is virtually identical to the previous version's. Perhaps the most major change, aside from a slight lightening of the gray in the color scheme, is the removal of the Windows Explorer-style forward and backward buttons. We actually liked those, since they made it easy to return to a previous pane, no matter how deeply into the settings you had explored.
The only other change is the addition of the Additional Protection tab to the left nav area, which hosts the new AutoSandbox and WebRep feature controls.
For users new to Avast, the sleek user interface is a change that came at the end of 2009. The gray-and-orange color scheme stands out well on the screen, and the tab-based navigation on the left makes it easy to navigate between features. Highlighted with the familiar security colors of green for safe and red for dangerous, the Summary tab gives up-to-date info on shield status, auto-updates, virus definitions, the program version, and whether the silent/gaming mode is on. There's also an unobtrusive ad urging you to upgrade to Avast Internet Security 6.
The Summary tab contains a second submenu, Statistics. If you're curious to see how Avast's shields have been performing against threats, here's where you can get your math geek on. For each shield, it tells you how many files were scanned and when, and presents the data in a concise graph.
Avast 6 keeps its interface from Avast 5, and adds features both big and small. Some that had previously only been available to paid upgrade users are now free for all versions, and newer features have been seamlessly added to the interface experience. If you're familiar with Avast 5, upgrading to Avast 6 won't be that big of a leap.
(Credit: Screenshot by Seth Rosenblatt/CNET)
The scans live in the second tab, where you can choose and adjust four default scan types plus a custom scan option nestled into the bottom right corner. Real-time shields live in the third tab, and again the clean interface comes into play here as navigating what could be a mess of options and tweaks is instead dead simple. Click on a shield to reveal a real-time chart of what the program's been defending you against, with a Stop button and settings options at the top of the window. Another button at the top takes you to the advanced settings for that shield, and links at the bottom expose the shield's history as a graph and export a log file.
Below the Additional Protection tab, which we covered above, the Maintenance tab contains the virus chest and manual update buttons. On the top right of the interface live the Help Center and the Settings, from which you can get much more granular control of Avast. This includes everything from toggling the system tray icon to managing updates to password-protecting Avast access. This is also where you can "uninvolve" your anonymously submitted data from Community IQ, the Avast crowdsourced behavioral detection engine.
One last change: a green Like Avast button has been added to the bottom of the left nav that expedites your Avast-related social networking. Fortunately, it's unobtrusive.
Features and support
As mentioned, the two big new features in the free version of Avast 6 are the AutoSandbox and the WebRep add-on. The debut of the AutoSandbox makes Avast the second antivirus option to offer a sandboxing tool for free. Competitor Comodo introduced a sandboxing tool in January 2010. Avast's sandbox probably works differently, as Comodo has a pending patent on its version. And certainly, one of the most frustrating things about sandboxing technology is that there are some indications that it doesn't work perfectly.
The AutoSandbox, new in both free and paid Avast versions, automatically places suspicious programs in a virtualized state when it suspects them of being threats. As the program runs, the sandbox keeps track of file behaviors and what it reads and writes from the Registry. Permanent changes are virtualized, so when the process terminates itself, the system changes it made will evaporate.
(Credit: Screenshot by Seth Rosenblatt/CNET)
Avast's version automatically places programs in a virtualized state when it suspects them of being threats. It walls off suspicious programs, preventing them from potentially damaging your system while allowing them to run. As the program runs, Avast's sandbox keeps track of which files are opened, created, or renamed, and what it reads and writes from the Registry. Permanent changes are virtualized, so when the process terminates itself, the system changes it made will evaporate.
The company hasn't said whether the virtualized state begins after the program already has access to your system, so it's theoretically possible that it could be compromised. There's not a single security feature in any program that hasn't been been compromised at some point, though, so "theoretically hackable" is true of all security features.
The AutoSandbox is different from Avast's paid-upgrade sandbox, and the paid upgrades to Avast Pro and Avast Internet Security include both the automatic version and the older, manually initiated version.
You can access the AutoSandbox settings from the new Additional Protection option on the left nav. It defaults to asking the user whether a program should be sandboxed, although you can set it to automatically decide. There's a whitelist option for programs that you always want to exclude from the sandbox, and you can deactivate the feature entirely.
Avast 6 also marks the debut of the program joining (or succumbing to) the browser-security add-on, with the new WebRep. Security add-ons have a long-standing word-of-mouth reputation for decreasing browser performance, although Internet Explorer 9 Release Candidate's impact meter pegs Avast's plug-in at 0.07 second, well below the threshold of 0.2 second that IE uses as the default upper limit for browser performance impact.
WebRep works with IE and Firefox out of the box, and Avast says it plans to release a Chrome version soon. It supports a search result ranking and Web site reputation service that uses a combination of data from Avast's virus labs and user voting to determine a safety score for a site. User voting is a crapshoot for many security vendors, although Avast is known for its vast user base and their passionate support of the program, so the company's plans to give users incentives to vote could easily work in its favor. And make no mistake, Avast fans are truly fanatics: Avast Free has an average 4.5-star rating from Download.com readers, extremely unusual for a program with more than 15,000 votes.
It's important to note that the add-on installs to both Firefox and IE as you install Avast 6. If you don't want it, it's surprisingly easier to remove from within Avast instead of from within the browser. Currently, removing the add-on using the browser's interface will cue Avast to reinstall the add-on the next time the computer is rebooted.
Many of Avast 6's small improvements are worth noting as well. The Troubleshooting section now comes with a "restore factory settings" option, which makes it easier to wipe settings back to a familiar starting point, and comes with the option to restore only the Shields settings, leaving other changes untouched, like permanently running in silent mode. There's a new sidebar gadget for Windows 7 and Vista, and you now can set automatic actions for the boot-time scan. Available under the Scan Computer tab, the boot-time scan customizations give you far more flexibility in managing the lengthy and time-consuming boot scan.
Two features that have trickled down to the free version in Avast 6 are the Script Shield and site blocking. The Script Shield now works with Internet Explorer 8 and 9's protected mode.
Avast doesn't offer an on-demand link-scanning feature, like AVG and Norton do, although the company says that the way that Avast's Web shield behaves ought to protect you automatically from any malicious URLs by automatically preventing the URL from resolving in-browser. A page will appear letting you know that Avast has blocked the site because it is suspected to contain a threat.
If you're running Avast Pro Antivirus 6 or Avast Internet Security 6, the big new feature is the introduction of SafeZone, a virtualization feature that the company envisions people using for secure online banking. The basic difference between SafeZone and AutoSandbox is that the sandbox is designed to allow suspicious activity to run within a safe, walled-off, easily discarded environment, while SafeZone is the opposite. SafeZone creates a secure space that, ideally, prevents threats from getting in.
The AutoSandbox, new in both free and paid Avast versions, automatically places suspicious programs in a virtualized state when it suspects them of being threats. As the program runs, the sandbox keeps track of file behaviors and what it reads and writes from the Registry. Permanent changes are virtualized, so when the process terminates itself, the system changes it made will evaporate.
(Credit: Screenshot by Seth Rosenblatt/CNET)
SafeZone is accessible from the right-click Windows Explorer context menu, from the middle icon in the Windows 7/Vista desktop gadget, and from the Additional Protection tab in the Avast interface.
The difference between Avast Free and Avast Pro is that Pro gets the SafeZone, whereas Avast Internet Security differentiates itself by including SafeZone, antispam measures, and a firewall.
If you're new to Avast, the core features are what make it one of the best security suites around. The antivirus, antispyware, and heuristics engines form a security core that also includes multiple real-time shields. The adjustable mail and file system shields join the pre-existing behavior, network, instant-messaging, peer-to-peer, and Web shields. The behavioral shield is a common-sense feature, as security software publishers draw on their large user bases to detect threats early and warn others.
Other features include a gaming mode that can be used to permanently "silence" Avast notifications, and an "intelligent scanner" that only looks at changed files after establishing a baseline.
Program scans live in the second tab, where you can choose and adjust four default scan types plus a custom scan option. What's useful about Avast's layout here is that you can adjust all Avast-related scans from this tab. This includes Quick and Full scans, the Removable Media scan, and the Folder scan. In a polite turn, running a scan does not prevent you from exploring the rest of the program.
You can also schedule a boot-time scan and access scan logs from the scan tab. While running a scan, Avast will tell you not only how long the scan has taken and how many files have been examined, but also how much data has been tested and how fast it's being tested. As with the summary graphs, Avast exposes a lot of data here.
Performance
As far as Avast's impact on system performance goes, in a real-world test Avast completed its scans in a timely yet not blazingly fast manner. A Quick Scan took about 20 minutes, and the Full Scan took 59 minutes. RAM usage was surprisingly light, with Avast 6 only eating up about 16MB when running a scan.
As you can see in the chart below, CNET Labs benchmarked Avast 6 as having a moderate impact on system performance. It wasn't the overall best suite we tested, but the three versions of Avast did perform better than average in every category execpt one.
There were some notable areas where Avast did well. Avast had a minimal impact on startup time, with Avast Internet Security 6 adding 6.25 seconds, Avast Pro Antivirus 6 adding 5.76 seconds, and Avast Free Antivirus 6 slowing down the boot cycle by around five and a half seconds. All three posted a tiny impact on system shutdown, around 1.3 seconds slower than an unprotected computer. Scan times as well were competitive, slower than AVG, Trend Micro, and Panda, but faster than most competitors including Microsoft Security Essentials, Norton, and Ad-Aware. Also, Avast Pro Antivirus posted the best Cinebench score we recorded.
Avast's one point of weakness in the lab was its MS Office decoding test performance, where it was slightly slower than average but by no means the slowest suite tested.
Security Program Boot time Shutdown time Scan time MS Office performance iTunes decoding Media multitasking Cinebench
Unprotected system 42.5 11.28 n/a 917 180 780 4795
Protected system (average) 50.07 15.00 988.96 1,047.19 200.19 832.69 4,755.73
Avast Free Antivirus 6 47.9 12.4 697 1053 199 798 4742
Avast Pro Antivirus 6 48.21 12.5 665 1083 199 798 4793
Avast Internet Security 6 48.75 12.43 695 1086 201 804 4792

*All tests measures in seconds, except for Cinebench. On the Cinebench test, the higher number is better.
You can read more on how CNET Labs benchmarks security software.
All the security features in the world do you no good if they don't keep you safe, and on that count Avast performs well in general. However, as results from independent efficacy testing groups indicate, Avast could be better.
AV-Test.org gave Avast 5, the previous version of Avast, a passing rating in its most recent test, on a Windows Vista computer from the fourth quarter of 2010. Avast 5 barely surpassed the minimum score of 12, notching 13 out of 18. It reached 3.5 out of 6 in Protection, 4.0 out of 6 in Repair, and a 5.5 out of 6 in Usability. Many other suites scored the same or higher, including F-Secure, Kaspersky, Norton, and Panda. Among its free competitors during the fourth-quarter test, Avast scored better on the key metric of Protection than Microsoft Security Essentials 1.0, but worse on Protection than Avira 10.0 (4.0 out of 6) and AVG 10.0 (4.5 out of 6).
AV-Comparatives.org, on the other hand, showed progressively better scores for Avast from August 2010 through November 2010 on its "whole product" test. However, Avast's cumulative rate of blocking threats was 96.4 percent, below AVG's cumulative 97.1 percent and Avira's 98.7 percent. Still, the positive improvements in the last two months indicate that Avast has been adapting to changes in the threatscape--never a bad thing. Overall, Avast earned an Advanced certification, along with seven others, including AVG. An Advanced+ certification was earned by four others, including Avira.
Dennis Labs' most recent evaluation of Avast occurred back in August 2010, when the lab scored Avast 5 at 93 percent and above the 87.5 percent average for that test. It was the only free antivirus application to do so. Other above-average scores were reached by G Data, Eset, Kaspersky, and Norton, which scored 100 percent on Dennis Labs' test.
Judging from these results, Avast is clearly one of the best security products around, although there's definitely room for it to improve.

Publisher's Description

From AVAST Software:

Avast Free Antivirus is a full-featured product, with the same antivirus and anti-spyware scanning engine used in our premium products. Leaner and meaner version 6.0 provides even faster protection than its predecessor and offers a web-reputation browser extension as well as virtualization technology. Accurate threat updates via avast! CommunityIQ technology ensure worry-free downloading, surfing, social networking, and gaming--for over 170 million registered users (and over 130 million active users).
What's new in this version:
  • New Script Shield - now scanning deeper and supporting more host processes
  • Web Shield now scanning all processes by default
  • Stability improvements in aswSP.sys
  • Better tracking of file sources
  • WebRep now working in new versions of Firefox
  • Under-the-hood improvements in the Behavior Shield and Sandbox modules
  • Solved a compatibility problem with certain Steam-based games
  • Minor improvements in the product UI
Click to see larger images 

AVG Anti-Virus Free Edition 2012

The bottom line: AVG Free 2012's renewed focus on performance keeps scans zippy, but struggles with slowing down your boot time and too many false positives.
Review:
The never-ending mantra chanted by security suite vendors sounds a lot like "faster scans, easier to use, better performance," and AVG has released a new version that it says accomplishes all three. Certainly, the scans are faster, it does install more quickly, and some tweaks to the interface have made it easier to view. Two new core security changes will make you safer, too. 
 
Installation
We found that the program can go from completed download to ready to use in about 5 minutes.
Last year, AVG cut down the number of installation screens from 13 to 5. This year, the process continues to be short, but savvy users will want to be wary of a few things. First, if you have a browser open when installing, AVG will not warn you before it forces it to close. Second, you are opted-in to AVG's Security Toolbar and the Secure Search default search engine change. Users who opt out of installing the toolbar but want it later will need to rerun the installer to get it.
On the polite side, AVG does not opt you in to an automatic AVG Internet Security trial. By starting from a null position, you are required to actively choose to install AVG Free or the 30-day trial of AVG Internet Security. So this year's install procedure is a bit of a crapshoot, better in some ways than last year, but unchanged in others.
Interface
The changes to AVG's interface in the 2011 version were minor but actually improved usability quite a bit. This year, the tweaks are even less pronounced. There's not much different besides redoing the icons in the main interface so they're easier on your eyes.
AVG Free's slightly tweaked interface for 2012.
(Credit: Screenshot by Seth Rosenblatt/CNET)
There's a one-click Fix button for automatically repairing security breaches that appears at the top along with a yellow X when your system safety has been compromised. It disappears when your system gets a clean bill of health.
Joining the one-click Update button on the side nav is a one-click Scan Now button. There's a clean look to the nav, as well, with bigger fonts and timestamps for the most recent scan and most recent update.
AVG has placed icons for its security components in a central pane. Double-click on one to access more information and basic configuration settings for each specific tool. Advanced settings are available under Tools on the menu bar at the top of the window.
The new interface changes are small, no doubt, but they do make AVG easier to use.
Features and support
AVG 2012 includes a couple of solid changes to make you safer. The first is a patent-pending technique for identifying one of the most obnoxious threats to ever reach your computer: the fake antivirus. If you're unfamiliar, these programs purport to be an antivirus, or a Web-based antivirus scan. Once they install on your computer, the only way to get rid of the infection is to "buy" their license. They're also related to the ransomware infections, which don't even bother with the effort to pretend to be an antivirus. AVG 2012 will block both of them.
The LinkScanner tool has been improved to watch out for more dynamic code, which is essential in the security game because threats are mutating at such a rapid rate. Meanwhile, premium users get the new AVG Accelerator option, which optimizes your Internet connection to speed up downloads and rendering. It currently works on two sites: YouTube, and you can see its impact when pausing and unpausing videos; and Download.com binary downloads. The accelerator protocol was developed internally at AVG.
AVG now includes a monitoring tool that automatically warns you when Firefox, Chrome, or Internet Explorer consumes too much memory. Called AVG Advisor and in all of the AVG suites, it opens a small pop-up and asks you if you'd like to restart your browser. There's no way to "force" it to activate, although if you open up a couple dozen tabs, wait a few minutes, and then open another dozen or so, it ought to kick in.
Changes made last year are still relevant. The software offers what it calls "smart scanning," which leverages AVG's behavioral detection network to scan known safe files once, and only rescan them if it detects changes. As with its competitors, AVG's network is made up of its user base anonymously contributing data up to the cloud. You can choose to opt out of contributing your data when you install, or from the options menu. AVG says opting out won't negatively affect your security.
The smart scanning tech also gives you a built-in system resource manager that prioritizes scans. If a scan is scheduled to begin while the computer is in use, it will automatically restrict the scan so that it runs slower but doesn't interfere with the computer's other tasks. When it detects the computer idling, it will then allocate more power to the scan. The feature comes with a slider so you can customize how sensitive it is.
The desktop gadget for Windows Vista and Windows 7 users that lets them initiate scans and updates with one click, without having to open the full interface. It also contains links to AVG's Twitter and Facebook pages, which the company uses to bolster its support for the free version.
The PC Analyzer scans your system for Registry and disk errors. It includes a disk defragmenter and a broken-shortcut cleaner, as well. Although the feature is restricted in full to paid users, if you have the free version, the PC Analyzer comes with a one-time offer to clean all errors it finds. It provides a link to download the separate PC Analyzer tool, once the scan is completed. This is an interesting twist on the idea of letting users detect but not repair errors, and it provides more functionality while not affecting the basic security of your computer. However, it's likely that some users will shy away from the extra download.
Other features are restricted to users of AVG's paid upgrades. The paid upgrade version of AVG Anti-Virus 2012 distinguishes itself by offering chat link shield, a download scan for files sent via instant message that looks at all ports, not just port 80, and telephone support 24 hours a day, seven days a week. The PC Analyzer option mentioned earlier is also included, and comes without restrictions. New in 2012 to premium users is the new AVG Accelerator option, which optimizes your Internet connection to speed up downloads and rendering. It currently works on two sites: YouTube, and you can see its impact when pausing and unpausing videos; and Download.com binary downloads. The accelerator protocol was developed internally at AVG.
AVG Internet Security 2012 includes all that AVG Anti-Virus 2012 offers, and adds in a firewall and antispam protections.
Performance
AVG claims some major performance enhancements in the 2012 versions. Specifically, the company says that it has reduced by 40 percent the size on your hard drive of the virus signature database. That database is a major component of how the program recognizes threats. AVG also stated that the number of running processes that run suite has been reduced from 16 to 11, that it uses 20 percent less memory overall than previous versions, and that it ought to impact your computer's boot time less.
CNET Labs' benchmarks found that, on the whole, it is a faster program than last year's. However, we can't directly compare this year's results to last year's because we upgraded our testing computer from Windows 7 x64 to Windows 7 x64 with Service Pack 1. We can report that AVG's boot time impact was slower than average, ranging from 2 seconds slower than the average suite from AVG Free to 18 seconds slower than average for AVG Anti-Virus. AVG Internet Security was a few seconds slower than AVG Free. This is not unusual for AVG, as it historically has a big impact on startup, but that doesn't mean we don't want to see it get faster.
Shutdown impact continued to be minimal. Security scan times were the third-fastest suite we've seen so far year, though not as good as last year's tied-for-fastest numbers. The impact of the suites on the computer while in use were very similar to last year's--in general, slightly better than average, but not stellar.
Security Program Boot time Shutdown time Scan time MS Office performance iTunes decoding Media multitasking Cinebench
Unprotected system 40 6 n/a 395 120 342 17,711
Average of all tested systems (to date) 64.3 16.6 1,185 418 125 348 17,111
AVG Anti-Virus Free 2012 66.3 12 753 411 125 347 17,131
AVG Anti-Virus 2012 82.3 13.7 842 410 124 346 17,026
AVG Internet Security 2012 69.9 11.3 792 416 124 344 17,259

*All tests measured in seconds, except for Cinebench. On the Cinebench test, the higher number is better.
In our other tests, it was a bit faster than the median. It's not a big shift from last year, but it's enough to notice that it's moving in the right direction. You're looking at a much slower startup, fast scans, a minimal impact on shutdown, and a midrange hit to general system performance with AVG Free.
Third-party efficacy results haven't been published yet for AVG Anti-Virus Free 2012, but the 2011 suite marks are solid, if not spectacular. In the AV-Test.org test on Windows 7 from the first quarter of 2011, AVG Internet Security 10 (version 2011) scored 13.5 out of 18 overall, a solid midrange score. The suite had a 5.0 rating out of 6 in Protection, a 4.0 in Repair and a 4.5 in Usability.
The second quarter 2011 test, on a Windows XP computer, definitely showed improvement in some areas and regression in others. It scored 13.0 out of 18 overall, also a midrange score. The suite improved in Protection and Repair with a 5.5 rating out of 6 for the former and a 4.5 for the latter, but Usability dropped to 3.5 most likely due to false positives.
The most recent AV-Comparatives.org Whole Product test, which looks at on-demand scanning, retroactive tests, and "real-world" guards including cloud-based protections, puts AVG Internet Security 2011 toward the back of the class, out of 17 suites tested. Looking at Whole Product test results cumulatively from January 2011 to June 2011 found that AVG came in 13th, blocking 95.1 percent of threats. Much of that low score came from bad showings in March and April; by May it was back up in the 96 percent range.
It's fair to conclude that according to these third-party tests, AVG has been moderately effective, with some indications that it's been getting better in recent months. However, since AVG Internet Security and AVG Anti-Virus Free share the same engine, you're getting a strong level of protection at no cost.
Conclusion
A word of caution: We've noted before that the average person is paying more and more attention to performance, and there are far more viable operating system options than ever before. If security is more or less similar, people will be scrutinizing system impact greatly, and adding 30 seconds or more to your boot time has the potential to drive people not just from your security suite, but from your OS, too.
All that said, AVG Anti-Virus Free continues to offer an excellent if not perfect level of security, and is well-worth a serious shot at being your go-to suite.