Digital Trends - Security software is an everyday necessity for most people, especially Windows users, businesses, and enterprises. But one of the ironies of security software is that, once in a while, it turns out to be the source of security problems all by itself. The latest instance involves McAfee’s SaaS Total Protection suite, a cloud-based solution designed to provide comprehensive email and and Web filtering along with centralized security management for businesses and organizations. However, McAfee has just had to issue an update to the service to block a flaw that could let attackers execute code on protected machines, and to fix another problem that could potentially enable attackers to turn protected systems into spam relays.