The U.S. Department of Defense (DOD) seized hundreds of computers and around 60T bytes of data as part of an investigation into how details of the U.S. invasion plan for Operation Iraqi Freedom were leaked to The New York Times, a DOD official said. The investigation ended in 2003 without finding the source of the leak. However, it has prompted changes within the department, which is developing new software tools and investigative strategies for computer crime cases that involve large amounts of data, said Lt. Col Ken Zatyko, director of the DOD’s Computer Forensics Laboratory.