Big trouble. You understand big trouble?
Reports have been floating around all weekend that Cisco has had some amount of sourcecode pilfered for the OS that drives their routers. This is potentially a huge deal as Cisco powers much of the internet and they are usually pretty secretive about their source code and security practices.
According to the report, criminal hackers broke into Cisco's corporate network and stole 800MB of source code for IOS 12.3 and 12.3t (an early deployment version containing features not found in the vanilla 12.3 version). In addition, a 2.5MB sample of what is supposedly IOS code was released on an Internet Relay Chat channel as proof of the alleged theft.
That's a whole lot of source code and considering the number of inept admins and the number of routers with default passwords and such, this could potentially be a disaster.