Q&A: Staying Safe From Java Threats

Q.

I hear lots of scary stuff about hackers getting into computers thru Java. What do I need to do to make my Mac and PC safe? Any worries about tablets?

A.

Java is a computing platform with its own programming language that is used in many games, business applications and other utilities. It runs on more than 850 million computers worldwide and is used often by Web browsers. Recent attacks on Apple and Facebook used a flaw in the Java Web browser plug-in to infect computers with malicious software when visiting certain sites, and the Department of Homeland Security even issued a warning about Java back in January.

Computers running Windows, Mac OS X and Linux are most at risk. Tablets running systems like Android and iOS are not generally affected; mobile browsers have a setting for the JavaScript programming language, but JavaScript is basically unrelated to Java and its not subject to the current malware issues.

Disabling Java in your Web browser should protect your computer from the recent types of security threats, although you may not be able to play certain games or use Java-dependent applications. Oracle, which develops Java, has instructions for disabling Java in several browsers on Windows, Mac and Linux systems. Independent security sites, like Krebs on Security and Sophos, have additional information.

Apple released its own Mac OS X update to deal with the Java problem on Feb. 19, and the Macworld site has an article on going beyond the browser plug-in and removing Java altogether. Oracle has instructions for uninstalling Java completely on a Windows system, as well as on a Mac.