Two issues exposed financial data and Social Security numbers for 350,000 people, although it is thought the information has not been abused, the University of North Carolina at Charlotte said.
The university said in a statement earlier this week that it has fixed both problems, one of which lasted three months and the other more than a decade.
It blamed a system misconfiguration and incorrect access settings for the exposures, which also involved names and addresses of people who had done transactions with the university.
"The university has no reason to believe that any information from either of these incidents was inappropriately accessed or that information was used for identity theft or other crime," it said.
The problems were discovered by university staff. State and federal regulatory and law enforcement agencies have been contacted, the university said. It encouraged people who are concerned to place a free fraud alert with the major credit rating agencies and report fraudulent activity to the police and the university.
Send news tips and comments to email@example.com
Join the CIO Australia group on LinkedIn. The group is open to CIOs, IT Directors, COOs, CTOs and senior IT managers.