Computer viruses and remote control programs called bots are adopting features from stealthy programs called rootkits to avoid detection, security experts say. New versions of Rbot, a ubiquitous and malicious remote control program, copy and paste features from a well-known open-source rootkit called Fu. The new features make Rbot invisible to system-monitoring tools and are just the latest example of malicious programs that borrow strategies used by rootkits to evade detection on systems they infect, according to Mikko Hyppoenen, director of anti-virus research at F-Secure Corp., based in Hel- sinki, Finland.
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