Friday the 13th Malware: New Flashback Trojan Horse Variant Follows Apple’s Xprotect Update

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Apple has recently updated its Xprotect file quarantine system, used to check for malware downloaded by certain programs – notably Safari, Mail and iChat – but Intego has spotted a new variant of the Flashback Trojan horse, called OSX/FlashBack.J. This variant was released after Apple’s update, and Xprotect does not recognize it yet.

VirusBarrier X6’s generic signatures already detected this new variant, and will probably detect many future variants as well.