Apple rolled out a new update in order to stop the versions of Flashback Trojan that reportedly plagued 600,000 Macs.
Java for OS X 2012-002 is designed to patch the vulnerability exploited by the malware but according to analysts, it doesn't offer any substantial upgrade.
Security company Intego, says that it is essential that Mac users apply this update. "The Flashback malware has been very active in the wild, and can install with no user interaction, if Java is not patched".
As reported earlier, the Flashback Trojan managed to infect hundreds of thousands of Macs worldwide. The majority of the infected machines - 350,000 are in US; about 125,000 are in Canada and 75,000 in the United Kingdom.
What makes the malware dangerous is that it does not require user interaction and owners of the infected Macs are not even aware of the situation.
Consequently, Mac users, particularly those who have machines running on old OS X versions are advised to install the new Java update as soon as possible.
Also, it is very likely that Apple noticed a "minor glitch" in the first update and released a second one to fix any potential issue.
source: Intego (opens in new tab)