Apple is to publish a software update that will detect and remove the infamous Flashback exploits software currently infecting over 500,000 Mac computers.
In a statement on its site Apple confirmed it was following up the security fix it originally released on 3 April with an update designed to detect and remove the malware from infected devices.
The firm also said it was working with other firms to try and bring down the network used to distribute the malware.
"In addition to the Java vulnerability, the Flashback malware relies on computer servers hosted by the malware authors to perform many of its critical functions," it said.
"Apple is working with ISPs [internet service providers] worldwide to disable this command and control network."
Officially called the BackDoor.Flashback.39, the malware was detected earlier in April and according to statistics published by Russian security firm Doctor Web has already infected roughly 600,000 Mac computers.
The newest version of the Flashback Trojan is believed to have been active since 2011.
The malware targeted an unpatched Java vulnerability within Apple's Mac operating system.
The malware reportedly exploited the vulnerability to allow an applet to operate outside of the Java security sandbox, granting hackers the ability to remotely install code on a targeted system.
Apple's initial OS X update addressed 12 separate vulnerabilities in the OS X version of the Java platform, hampering the malware's ability to spread. Apple has not given a firm date when the update will be released.
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