samzenpus writes "A 27-year-old man serving six years for stealing £6.5million using forged credit cards over the internet was recruited to help write code needed for the installation of an internal prison TV station. He was left unguarded with unfettered access to the system and produced results that anyone but prison officials could have guessed. He installed a series of passwords on all the machines, shutting down the entire prison computer system. A prison source said, 'It's unbelievable that a criminal convicted of cyber-crime was allowed uncontrolled access to the hard drive. He set up such an elaborate array of passwords it took a specialist company to get it working.'"