"According to NASA sources, three External Wireless Instrumentation System Network Control Units (EWIS NCU) have been damaged. Apparently, the damage was deliberate. The EWIS NCU is a computer designed to store various data on the International Space Station."
"NASA also revealed that it had discovered the apparent sabotage of a noncritical component of the International Space Station due to be carried up by the shuttle. It launched an investigation after finding cut wires in a piece of computer equipment intended to transfer data from station sensors to the ground, the agency said."
"A space program worker deliberately damaged a computer that is supposed to fly aboard shuttle Endeavour in less than two weeks, an act of sabotage that was caught before the equipment was loaded onto the spaceship, NASA said Thursday."