Apple has an important Software Update for its users who employ Java in their businesses. Like it or not, that’s everyone who’s reading this. Java is endemic in the Web experience, with Java scripts and “applets” being launched many times you visit Web pages.

This security update closes a hole that permits hackers and spammers to take control of your Internet feed — turning your Mac into a drone for the transmission of spam and other communication you’d rather not be associated with.

Simply run Software Update and accept the upgraded Java file that Apple recommends. It’s a big one at 85 MB, but essential to maintaining control of your system. Apple released the patch on Friday (December 4), so it’s recent. And needed.