The new Zero Day JAVA exploits were patched yesterday by Oracle.  A new variant of the OSX Tsunami malware agent may be compromising security protection.  It is important to patch all platforms.

http://www.intego.com/mac-security-blog/osxtsunami-variant-found-dropped-by-java-0-day/

QUOTE: A variant of OSX/Tsunami has been found that is rumored to be dropped as a drive-by-download by the new Java 0-day exploit, CVE-2012-4681. This method of infection has not yet been confirmed, but as this OSX malware connects out to the same IP address as the Windows backdoors known to be dropped by CVE-2012-4681, it seems they are at least related incidents. At the time of writing, the JAR file that was purported to be dropping this Trojan has been replaced with a bit of threatening text