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Mac Defender malware returns in another variant

Less than a day after Apple tackled the malware threats in OS X with an updated implementation of its malware detection technologies, the MacDefender malware developers have issued another variant that bypasses Apple’s definitions to root out and remove the malware, reports “CNET” (

“ZDNet” ( says the new variant comes as a download called “Mdinstall.pkg” and will run without being detected by Apple’s new security implementations. It also shows that the malware developers are very actively trying to circumvent Apple’s efforts; the file’s time stamp shows that it was issued less than 8 hours after the security update for OS X was released.

Despite this new variant, Apple’s security update will still detect and remove older variants of the malware.

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