The Null Device
Onionesque headline of the day: Big Media Applaud Big Media Merger
Comedian steals show at Kennett policy launch. (ABC)
The famous paper by Ken Thompson (the creator of the original UNIX), in which he describes his infamous self-perpetuating C compiler/login trojan horse.
The moral is obvious. You can't trust code that you did not totally create yourself... No amount of source-level verification or scrutiny will protect you from using untrusted code... As the level of program gets lower, these bugs will be harder and harder to detect. A well installed microcode bug will be almost impossible to detect.