The University of Michigan on Monday confirmed that personal information was accessed in a data breach discovered in August 2023.
Initially disclosed at the end of August, the incident involved unauthorized access to the academic institution’s campus computer network and resulted in system disruption and internet outages.
The university’s investigation into the data breach has revealed that the attackers had access to certain systems between August 23 and 27, the institution notes in an updated data breach notification.
The attackers, the university says, were able to access the personal information of students, applicants, alumni, donors, employees, contractors, research study participants, and University Health Service and School of Dentistry patients.
According to the institution, the exposed information includes names, Social Security numbers, driver’s license numbers, financial information, and health information.
Immediately after identifying the suspicious activity on its network, the university took steps to contain the attack, including by disconnecting the campus network from the internet.
The university says it has informed law enforcement of the attack and that it has also started sending notification letters to the impacted individuals, but has not shared information on how many people were affected.
“Letters were mailed on October 23, 2023. Please allow at least five business days for these letters to arrive. Out of an abundance of caution, we are offering individuals whose sensitive information may have been involved in this incident complimentary credit monitoring services,” the academic institution said.