In a sustained campaign, Voits managed to get the login details and passwords for 1,600 county employees, including for the Xjail computer system that is used to track inmates. By March he had the logins to the prison management system and tried to amend the records of one inmate to arrange their early release.

His tinkering raised red flags, however, and the authorities moved in. Once Voits’ meddling was discovered, inmate records were fixed and the county called in computer forensics, spending $235,488 to fix the mess.

Source: Prison hacker who tried to free friend now likely to join him inside