Inmates smuggled computer parts from e-waste recycling workshop and built two clandestine computers out of them. They hid the computers behind a plywood board in the ceiling of a training room, connected those PCs to the Ohio Department of Rehabilitation and Correction network. Once the computers were online, they used their skills to break the law. The inmates accessed the internal records of other inmates, created inmate passes for restricted areas, accessed websites with information about manufacturing drugs, weapons, and explosives, and applied for credit cards under another prisoner’s name.
Source: https://thehackernews.com/2017/04/computer-in-prison.html