McAfee has announced an all-in-one security subscription service code-named Falcon. Competition in the security software market is heating up: Falcon is targeted at competitors Microsoft, who today shipped its Windows OneCare, and Symantec, whose Genesis product is due this fall.The Falcon service contains all the usual security suite components as well as PC backup and tune-up tools — features common to all three rivals’ products. A beta version of Falcon, which has been under development for more than 12 months, is expected within the “next few weeks,” according to a McAfee spokesman. Security