A malware exploit has been reported named Mal/JavaJar-B. The malware exploits a vulnerability in Java 7 that is already being used against systems and distributed among hackers, but has not yet been patched. The malware allows hackers to run code remotely on infected machines running Windows, Linux, and Unix, although Mac OS X remains safe as of now. The U.S. Department of Defense has advised users to disable Java on any systems running the software.
Users with the software installed can easily disable the software from running in the browser through unchecking 'Enable Java content in the browser' under 'Security' in the Java Control Panel. Java has recently played victim to a number of exploits that have used its broad implementation for more sinister purposes. Despite this, Java also provides a great platform for small developers to deploy their software, and has played host to many well-known titles such as Minecraft.