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Recently Mac security researcher and analyst Thomas Reed put to the test a number of popular antivirus tools for OS X, to see which perform the best for detecting known malware threats for OS X. This effort follows similar assessments done by Reed in past years, but has been repeated to characterize the fluctuating nature of not only new malware threats, but also the effectiveness of scanning engines as they receive software updates and new malware definitions from their developers.
In his testing, Reed found that the top malware scanners for OS X include the following (in no particular order) which were able to detect over 95 percent of tested threats:
*Avira Mac Security 2.0.1.105
*ESET Cybersecurity 5.0.115.0
*Kaspersky Security 14.0.1.46
*Dr. Web Light 6.0.6
Worthy of note here is that often acclaimed anti-malware tools such as the open source ClamXav, McAfee, and Symantec's iAntivirus, did not make it into this top tier set. Therefore, if you are looking for an anti-malware package to use, you might consider weighing those which perform well in tests like this, against the additional features they offer and recommendations by those who have used them.
Whether or not antivirus tools are recommended for OS X is a question that is still in a bit of flux. Hard-core Mac users often claim malware scanners offer more potential harm than good, especially given the relative lack of malware for OS X. However, this mentality butts heads with those who may not trust, or have, the abilities to avoid all potential avenues of attack on their systems.
In addition, often security tools will not only include anti-malware scanners, but also have firewalls, secure keyboard entry, and other routines that may sometimes be desired. In addition, some tools are relatively light-weight programs, while others use kernel extensions and background daemons, which may be more intrusive to the system and result in odd or unwanted behavior.
Regardless of what you choose, the most important aspect of a malware scanner is its ability to detect malware, and with results of testing such as that done by Reed, we can make better decisions by clearly distinguishing the top runners from the rest of the field.
Questions? Comments? Have a fix? Post them below or e-mail us!
Be sure to check us out on Twitter and the CNET Mac forums.
Updated 10:50 a.m. PST December 2 to correct that Apple previously recommended antivirus software to Mac users, and at 1:50 p.m. PST with call back from Apple and link to 2002 Apple anti-virus item. A follow-up blog will be posted that goes into more detail about the coverage.
Apple is recommending that Mac users install antivirus software.
But don't read this as an admission that the Mac operating system is suddenly insecure. It's more a recognition that Mac users are vulnerable to Web application exploits, which have replaced operating system vulnerabilities as the bigger threat to computer users.
On November 21 Apple updated a technical note on its Support Web site that says: 'Apple encourages the widespread use of multiple antivirus utilities so that virus programmers have more than one application to circumvent, thus making the whole virus writing process more difficult.'
The item offers three software suggestions: Intego VirusBarrier X5 and Symantec Norton Anti-Virus 11 for Macintosh, both available from the Apple Online Store, and McAfee VirusScan for Mac.
MacDailyNews unearthed the same note posted by Apple in June 2007 and published it on Tuesday,a long with a link to a March 2002 note from Apple urging people to use an anti-virus program.
Apple representatives did not respond to e-mails seeking comment on Monday, but did return a call on Tuesday. A spokesman said he would look into the matter.
Brian Krebs, who first reported on the Apple antivirus recommendation Monday in his Security Fix blog at The Washington Post, said an Apple store employee told him he didn't need antivirus software when he purchased a MacBook three months ago.
For years, Apple has enjoyed a period free from concern over viruses, while Windows has been blasted with viruses that were written to make the biggest impact by targeting the dominant OS platform.
Microsoft's software patch releases are watched closely by the entire industry. The company overhauled its own software development practices and constantly urges Windows users to install and update antivirus and other security software.
Meanwhile, Apple's message has been that Mac users are immune to viruses, as evidenced by this television ad.
Dave Marcus, director of security research and communications at McAfee, said Apple was reacting to the realities of the market, where Mac users are finding they are not immune to Trojans and other Web-based malware that malicious hackers write to steal data from computers.
'Apple is realizing that malware these days is targeting data, and valuable data exists just as much on an OS platform that is a Mac as it does on an OS platform that is Windows,' he said.
Threats to applications are rising while exploits of operating system weaknesses are declining. Operating system vulnerabilities represent about 6 percent of disclosed vulnerabilities while more than 90 percent of vulnerabilities are found in applications, according to a Microsoft security report from last month.
Trojans that are secretly dropped on a computer from a malicious Web site are the most prevalent malware threat. In April, Microsoft reported a big spike--a 300 percent increase year-over-year--in the number and proportion of Trojan droppers that its Malware Protection Center detected and removed.
'The malware we see today is Trojans, password-stealing Trojans,' Marcus said. 'They are little apps that are dropped onto the machine to do something. They don't infect files and copy themselves. They are looking for specific information and they send that information somewhere else.'
Trojans, which often masquerade as legitimate applications like video players, exploit vulnerabilities in the application code or take advantage of a weakness in the browser, and thus can be equally threatening to Windows and Mac platforms, he said.
Although Windows is the more popular target, even for Trojans, there have been Trojans that target the Mac, including one that targeted porn surfers last year and one this summer called 'AppleScript.THT.'
Meanwhile, the biggest targets for application vulnerability exploits are Office and Internet Explorer, according to Marcus.
McAfee's antivirus software protects against viruses that target the operating system as well as Trojans and other malware that exploit weaknesses in the applications, 'regardless of what type of way it is using, via the browser, Word, or Firefox,' he said. (Marcus, however, didn't agree with Apple's advice to run multiple antivirus products on one computer, saying they would fight for resources and could run into conflicts.)
A Symantec representative provided this statement when asked for comment: 'Symantec has long encouraged consumers to use a security solution, regardless of the platform, especially with the rise in platform-agnostic threats like malicious Web sites and online scams.'
The changing threat landscape from one where attackers try to worm their way onto victims' PCs through holes in the operating system to one where more attacks are coming at computers through the applications and browser should change the nature of the Mac versus PC security debate.
No platform can claim to be safe now. Free Mac Antivirus
'At the end of the day, they're (Apple is) advising people to be safe and take precautions,' Marcus said. Best vst for mac. 'That's a prudent thing to tell people in Web 2.0 world.'
