Security for Mac eliminates infamous Mac threats like Genieo, Vidx, and VSearch. Formerly known as Avast Free Mac Security, this tool deeply scans the system and removes any harmful codes that degrade the overall performance of the Mac computer. In cases like this, one of your options is to scan the computer with Avast Security for Mac. If your Mac is running slow and annoying pop-up advertisements begin to flood your screen, there is a possibility that it is infected with malicious programs.