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Two More Mac Trojans Discovered, But Don't Panic

Two benign Trojans target Apple's Mac OS exploiting the same Java flaw patched last week.

Following the outbreak of the Flashback Mac Trojan, security researchers have spotted two more cases of Mac OS X malware. The good news is most users have little reason to worry about them.

Both cases are variants on the same Trojan, called SabPub, Kaspersky Lab Expert Costin Raiu wrote on Securelist.

(See Related: Flashback Malware Puts Apple in Security Spotlight: Experts Weigh In)

The first variant is known as Backdoor.OSX.SabPub.a. Like Flashback, this new threat was likely spread through Java exploits on Websites, and allows for remote control of affected systems. It was created roughly one month ago.

Fortunately, this malware isn't a threat to most users for a few reasons: It may have only been used in targeted attacks, Raiu wrote, with links to malicious Websites sent via e-mail, and the domain used to fetch instructions for infected Macs has since been shut down.

Furthermore, Apple's security update for Flashback helps render future Java-based attacks harmless. In addition to removing the Flashback malware, the update automatically deactivates the Java browser plug-in and Java Web Start if they remain unused for 35 days. Users must then manually re-enable Java when they encounter applets on a Web page or a Web Start application.

The second SabPub variant is old-school compared to its sibling. Instead of attacking through malicious Websites, it uses infected Microsoft Word documents as vector, distributed by e-mail.

Like the other SabPub variant, this one was used only in targeted attacks, possibly against Tibetan activists. So unless you're working with a pro-Tibet organization--and you have a habit of opening suspicious Word documents--there's little reason for alarm. At most, SabPub is more evidence that Macs aren't immune to attacks--a point that Flashback already made perfectly clear.

Follow Jared on Twitter, Facebook or Google+ for even more tech news and commentary.


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