Mac App Store is the simplest way to find and download apps for your Mac.To download VirusBarrier Express from the Mac App Store, you need a Mac with Mac OS X 10.6.6 or later. Learn More. Description VirusBarrier Express is a free antivirus and anti-malware tool based on the award-winning technology of Intego's VirusBarrier X6. VirusBarrier Express protects Mac users from viruses, Trojan horses an