A new command-and-control Trojan for OS X appears to be associated with the Syrian Electronic Army.
New XProtect definitions identify Yontoo as "OSX.AdPlugin.i" and block all but the latest versions of Java.
OS X does not provide a way to monitor XProtect updates, but you can set up a custom script to do so.
Apple has updated its Web plug-in blacklist to include all but the most recent versions of Java.
Apple's new plug-in manager in Safari allows for site-specific customization of plug-in behavior.
A new variant of the Flashback malware has been found, though current malware definitions should detect it.
After over a year of no apparent activity, a new variant of the Tibet malware affecting OS X systems has been found.
Apple has updated its XProtect malware scanner to contend with the second revision of the Flashback malware, though this update comes after a bit of a delay.
The latest malware threat for OS X is a minor and obscure Trojan horse of which new versions have been found recently.
Readers ask about the OS X quarantine system, hot-corner triggers, and file locks in iWork.