Last week, security researcher Landon Fuller posted attack code for a Java vulnerability in Apple's Mac OS X that hackers can use. "Due to the fact that an exploit for this issue is available in the wild, and the vulnerability has been public knowledge for six months, I have decided to release my own proof of concept," Fuller wrote on his blog.

A security update for Mac OS released two weeks earlier didn't include a patch. Apple now says it is aware of the issue and working on a fix. Security vendor SecureMac advises people to disable Java in their browsers until Apple fixes the problem.

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