This one is new to me:

A foreign hacker who penetrated security at a Harrisburg, Pa., water filtering plant is under investigation by the FBI for planting malicious software capable of affecting the plant’s water treatment operations, ABC News has learned.

The hacker tried to covertly use the computer system as its own distribution system for e-mails or pirated software, officials told ABC.

“The concern was high because it is a computer that controls an important infrastructure system, and if, for some reason, it caused it to fail, it would have disrupted service,” said Special Agent Jerri Williams of the FBI’s Philadelphia field office. Hackers Penetrate Water System Computers Richard Esposito, October 30, 2006 3:15 PM

The report says this isn’t the first such water supply cracking incident.

What I find most interesting is that the cracker was using the water system’s computers for distributing warez. That would seem to mean that security was lax enough that plain old bot herders probably did it.

Makes you wonder about the rest of that and other basic infrastructures.

-jsq

PS: Seen on fergie’s tech blog.