User 4574

"Wow, he's been busy. Over the past two weeks he's accessed a number of secure files. Mission logs, briefings, personnel files."

- Major Samantha Carter

User 4574 was the N.I.D. user identification for Colonel Frank Simmons. He used the access code to unlock files on all SG-1 personnel. When he found out that Major Samantha Carter discovered his infiltration he threatened that he could destroy her career because she hacked the system during his investigation of her and her team.