IM Worm - "Botnet" Advancing Click Fraud

A computer worm that spreads via instant messaging is being used to build an extensive “botnet” of remote-controlled PCs, a US security firm has warned.

Security experts at US company FaceTime identified the worm as “W32.pipeline” and warned that it spreads via AOL’s instant messenger program.

Botnets can also be used to commit “click fraud”, which involves ordering the zombie machines to repeatedly click internet advertisements, to generate money for a company that is paid per click.