A couple of weeks ago, the city of Carson, California discovered that it was a couple of thousand dollars short in its coffers - $450kus, to be exact. As it turns out, the laptop computer used by Karen Avilla (city treasurer) was infected by a keystroke logger installed through unannounced means (probably a website she visited, or a malicious e-mail, though it's entirely possible that the intruders managed to get in some other way, like through a clandestine wireless access point). An unknown group of crackers managed to snaffle the access codes to the bank that the city kept its money …