A new version of a well-known family of Mac malware exploits vulnerabilities in Java to steal usernames and passwords for online payment, banking and credit card websites.
Flashback.G is the first variant of the Trojan horse to use an attack vector that doesn't require any user interaction, said Intego Security, a French firm that specializes in Mac antivirus software. Most Mac malware needs help from users to get on a machine, if only to okay an installation by entering the system password.
One of the new features of OS X 10.8 Mountain Lion has been the addition of Gatekeeper. By only allowing apps to be installed from the Mac App Store, Mountain Lion’s Gatekeeper feature gives users a new level of security from malicious software.
OS X Mountain Lion has extended the functionality of its predecessor viz. Mac OS X Lion by adding over 100 new features to it. Gatekeeper is one of those news features and it provides a whole new security mechanism for Mac users.
Mac OS X users are familiar with warnings like the one shown here. Apple's "quarantine" has been in place for awhile, and it offers some minimal protection against accidentally opening files which have been downloaded from the Internet.
What most Mac OS X users probably don't know is that Mac OS X keeps a log of all files downloaded. Files are added to that log even if you are using "private" browsing in Safari or "incognito" in Google Chrome, and the log does not appear to ever be cleared.
Hackers are testing new Mac malware that they've ported from a nine-year-old Trojan horse originally written for Linux, according to security experts.
The malware, dubbed "Tsunami," has been circulating in limited numbers since last week, said researchers at the Slovakian antivirus firm, ESET Security.