Officials have arrested a city of San Francisco IT network administrator for locking up a multimillion-dollar city computer system, according to several reports stemming from a press conference with San Francisco District Attorney Kamala Harris. The employee, Terry Childs, 43, is accused of improperly tampering with computer systems and causing a denial of service, effectively locking out other top city administrators from the critical network. Police believe Childs set up his own secret password that grants him exclusive access to the city’s new FiberWAN.