This is just disturbing. And long.
The Los Alamos National Laboratory (LANL), which is operated by the National Nuclear Security Administration (NNSA), is responsible for, among other things, designing nuclear weapons.
In summary, LANL experienced 57 reported security incidents involving the compromise or potential compromise of classified information from October 1, 2002, through June 30, 2007, according to DOE's ITAC database. Thirty-seven (or 65 percent) of these reported incidents posed the most serious threat to U.S. national security interests. Of the remaining 20 incidents, 9 involved the confirmed or suspected unauthorized disclosure of secret information, which posed a significant threat to U.S. national security interests. The remaining 11 reported security incidents involved the confirmed or suspected unauthorized disclosure of confidential information, which posed threats to DOE security interests.
Full report -
Here