This is astounding:
Inmates at a medium-security Ohio prison secretly assembled two functioning computers, hid them in the ceiling, and connected them to the Marion Correctional Institution's network. The hard drives were loaded with pornography, a Windows proxy server, VPN, VOIP and anti-virus software, the Tor browser, password hacking and e-mail spamming tools, and the open source packet analyzer Wireshark...Via Bruce Schneier.
A forensic analysis of the hard drives found that they were loaded with "malicious" software and that inmates used the computers to apply for credit cards, research tax-refund fraud, search inmate records, and obtain prison access passes for restricted areas. "Additionally, articles about making home-made drugs, plastics, explosives, and credit cards were discovered," according to the report.
The inspector general's report found that inmates "took two computers that should have been disassembled, placed hard drives into the computers, installed a network card, transported the computers across the institution for approximately 1,100 feet, through the security check point without being searched or challenged by staff, accessed an elevator to the third floor and placed the two computers in the ceiling of the P3 training room." The report added that "they also ran wire, cable, and power cords to connect the devices undetected onto the ODRC (Ohio Department of Rehabilitation and Correction) network."