While Symantec software already spots many forms of spyware, new features have improved the ability of the company's products to detect spyware and Trojan activity in real time, and to remove spyware installations once they are identified, according to Brian Foster, senior director of product management for client and host security at Symantec. The company also improved its spyware definitions to include instructions for cleaning up after the spyware, Foster said. Also, Symantec's Network Security 7100 Series Intrusion Prevention appliances will be able to block communications from spyware and remote control Trojan horse programs, or bots. The new features on the 7100 series allow organizations to protect networks against spyware and Trojan horse programs by spotting and isolating communications from compromised machines networks, Symantec said. McAfee is also announcing changes designed to combat spyware. The company will begin releasing virus definition files, or DATs, each day, starting Feb. 24.