Oracle today pushed out the third update in less than a month to fix critical vulnerabilities in its Java software. This patch plugs a dangerous security hole in Java that attackers have been exploiting to break into systems. Oracle had intended to quit shipping updates for Java 6 at the end of February, but apparently reversed course for the time being to help Java 6 users address this latest crisis. The previous Java update released on Feb. 19 came amid revelations by Apple, Facebook and Twitter that employees at these organizations were hacked using exploits that attacked Java vulnerabilities on Mac and Windows machines.”]
Source: https://krebsonsecurity.com/2013/03/oracle-issues-emergency-java-update/