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That means that Java applications are designed to run inside a Java Virtual Machine installed on your Mac. It’s a complete application runtime environment. If you plan to keep Java, make sure that you update it as soon as possible. But it’s impossible to overstate the risk: Nearly all recent Mac malware attacks rely on exploiting Java or Flash in a Web browser. Removing Java will be problematic for some people, especially those who use Macs at work and isolating it isn’t simple. We don’t make this recommendation lightly. The advice boils down to: You should do everything you can to remove Java from your Mac or, if that isn’t possible, to isolate it to the fullest extent possible. With the news that some Apple, Facebook, and Twitter employees’ Macs were hacked, as well as Apple and Oracle’s subsequent software patches, it’s time to revisit the question of whether Java can be used securely.
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