Trojans, worms and viruses are beginning to use the Background Intelligent Transfer Service (BITS) used to update Windows, to dodge firewalls and infect computers, according to new research. The latest quarterly report from Panda Software’s PandaLabs research team said that malware was using the service, often used to deply updates and fix security flaws in Windows, to download malicious code and compromise the host machine.

"Some trojans use this service to send stolen data," the report said. "In this aspect, it is worth mentioning that although it is an original and quite effective way to dodge perimeter security solutions, it requires prior infection, which is not an easy task." ITPro: Security: News: Trojans using Windows service to update malwarerojans using Windows service to update malware