Major bugs found in Diebold vote systems
Washington, DC, Nov. 12 (UPI) -- The voting machine controversy likely will linger after a look at the systems source code software from Ohio-based Diebold yielded reports of numerous bugs...
... The Digital Encryption Standard 56-bit encryption key used can be unlocked by a key embedded in all the source code, meaning all Diebold machines would respond to the same key.

Rubin, his graduate students and a colleague from Rice University found other bugs, that the administrator's PIN code was "1111" and that one programmer had inserted, "This is just a hack for now."

The implication is that by hacking one machine you could have access to all Diebold machines...