Following the disclosure of the latest breach, Zelchenko, created a designed to help voters determine exactly what information might have been included in the disks that were handed out.

Regarding the latest breach, Zelchenko said it was "far worse" than the problem he disclosed in October. "There is now not one path to the information, but easily hundreds, on hundreds of CD-ROMs distributed over the years," he said.

"Essentially, you can select from among 2.2 million Chicagoans and know their full name, current and past addresses, family members' identities, birthdate, sex, phone number, Social Security numbers, and what years they voted. You couldn't plan a more ideal package for identity theft," he said.