Mac malware warning: new threat

Mac owners have been urged to be wary of a new threat that targets the Apple computer as well as Windows-based PCs.

Researchers at security firm Sophos have discovered the OSX/RSPlug Trojan horse, which is being distributed on websites offering fake HDTV software.

"Mac users are no different to Windows users when it comes to falling for social-engineering tricks like this - they are just as likely to install and run this program on their computer if they believe it will help them watch high-definition TV," said Graham Cluley of Sophos.


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Trojans specifically targeted at the Mac OS may be uncommon, but this particular attack is even more unusual as it can also infect Windows-based PCs.

"Windows users shouldn't be feeling smug about this attack against Mac users. If you visit the website from a Windows computer, it will serve up a malicious Windows executable from the Zlob family of malware rather than the RSPlug-F Mac OS X Trojan horse," Cluley said.

Another Mac Trojan was spotted back in January, to add to several instances of Mac malware spotted in 2008.

Web User examined the issue of Mac malware in Issue 209. You can buy digital editions of Web User back issues or call 01733 385 170 to order a copy.

Read Web User's Live Chat with Graham Cluley