A new piece of malware is targeting Mac, Windows, and Linux users all at the same time, note security firms F-Secure and Sophos. The code pretends to be a needed add-on; in reality victims are opening up a Java Archive file, which then detects the platform a person is using before connecting to a remote server to fetch additional code, creating a back door for hackers. The Mac version of the malware is identified by F-Secure as "Backdoor:OSX/GetShell.A."
