Security Account Manager Hear it!

Security Account Manager (SAM) Hacker Definition
On Microsoft Windows 2000 and NT, user account data is stored within the SAM, which is actually just one file on the disk. SAM is a primary target for crackers. Given that SAM is stored in both an original and a repair version, crackers tend to seek the “repair” version because it is not locked by the operating system.

See Also: Crackers.