"Banging the drum for security awareness never gets old. As much as CSOs try to get folks to bone up on safe practices (both online and in the office), there are always going to be some who need reminding. Online, the biggest battle these days is against botnets: networks of infected computers which hackers can use — unbeknownst to the machine’s owner — for online crimes including sending out spam or launching a denial of service attack.
Unfortunately, the black-hat techniques employed to snare users into a botnet web have evolved to a level that makes them often undetectable by even the most sophisticated security products. Combine that with a lack of user knowledge, and the threat of infection becomes very high. " – Content courtesy of 3 Basic Steps to Avoid Joining a Botnet – Network World