Some security mavens have long theorized that as the Mac becomes more popular, we'd start to see malware that would start targeting the platform. Sure enough, this morning's crop of email blasts from PR firms included a few notices of trojans that are affecting Mac users.
First, from SecureMac, comes word of trojan.osx.boonana.a, which comes disguised as a link on social networking sites asking "Is this you in this video?" Clicking the link downloads and runs a Java applet that then installs further applications to modify system files and open the system to password-free access. The other malicious apps report back to command and control servers, as well as hijack user accounts to spread the trojan through email spam.
The SecureMac press release notes that the "Java component of the trojan horse is cross-platform," but it's not clear from their statement that the other components are capable of running under Mac OS X.
Next, Intego reported that a similar Java trojan known as Koobface.A is also being spread through social networking systems such as Facebook and Twitter.