Windows 7: Mozilla Blocks Java in Firefox for Some Mac Users

Mozilla this week began blocking outdated versions of a Java plug-in in Firefox for some Mac users after calling the threat posed by the Flashback malware "evident and imminent."

The move came two weeks after Mozilla disabled unpatched versions of Oracle's software on Firefox for Windows.

Although Mozilla said on April 2 that it might add the Java plug-in to Firefox for Mac's blocklist -- a list it maintains of add-ons and plug-ins that the company disables because they're infected with malware or have been targeted by attackers -- it didn't follow through until Monday.