A new Trojan horse program that attacks and removes troublesome advertising software, known as "adware," is circulating on the Internet, according to antivirus company Symantec. The program, called Downloader.Lunii, was discovered earlier this week. When run, it attempts to kill off computer processes and delete files used by common adware programs like Powerscan and BargainBuddy. However, Lunii is not entirely benevolent. Like other Trojan horse programs, it also modifies the configuration of Microsoft Windows machines and attempts to download files from a remote location, Symantec warns.
Trojan horse programs are a part of a growing problem related to surreptitious monitoring and remote access programs on the Internet, which are often referred to as spyware. The programs can be unwittingly installed by users who open e-mail file attachments, or click on links in e-mail messages or on Web sites that download and install the programs on the user's computer.
News source: PCWorld.com