authentication

Botnets have long used a variety of configurations, in part to disguise their control mechanisms. But as user-friendly but insecure applications continue to become available -- especially social networking programs -- hackers have an ever growing number of security holes to choose from. They're also getting smarter about building resilient architectures, according to botnet hunters who have monitored recent activity. Here are four reasons the botnet fight is getting harder, and what to do about it: