“Web Security” Pop-Up Trojan Making Rounds Again, This Time Attacking Both Windows and Macs

The “Security Alert” trojan, sometimes known as a ‘rogue antivirus’ attack, is making the rounds again. First spotted a few years ago, until recently the “web security” antivirus alert trojan targeted mainly PCs, tricking Windows users into downloading the evil ‘BestAntivirus2011.exe’ file by telling them that “To help protect your computer Windows web security have detected trojans and ready to remove them.” (Note the poor language usage.) Now this same tactic is being used to attack Mac users – all that has changed is the “Windows” to “Apple” and the file name (‘MacProtector.mpkg for Macs’) – even the poor language remains the same! “To help protect your computer Apple web security have detected trojans and ready to remove them.” says the pop-up. Don’t fall for it, and whatever you do, don’t click on “Remove all”, which will cause the malware to be downloaded to your computer.