Internet access has been restored at the University of Michigan after a security issue interrupted service last weekend. The school year started Monday. The outage began Sunday afternoon at the main Ann Arbor campus and smaller campuses in Flint and Dearborn. President Santa Ono says technology teams still are investigating the security issue. Ono says he can't share any information that might compromise the investigation. The Ann Arbor campus has more than 50,000 students, including 32,000 undergraduates.
