BleepingComputer reported on 26 October that the University of Copenhagen has confirmed a cyber attack. Hackers got into one of its test environments, which held personal data on 525,000 people. The university found the breach last Tuesday and announced it on Friday. In an update the day before the report, it said another 20,000 staff and students had their PIN codes exposed.
The university says it is still investigating how far the breach reached. It has not said how the attacker got in. It says it contained the attack and blocked the attacker, and that nothing so far shows hackers reached systems used for daily operations. Because of the PIN exposure, it limited physical access to some critical campus locations. It is reopening them as it hands out new access codes.
The university has about 36,800 students and 10,700 employees, so 525,000 people is far more than that. The report does not say who the rest are. As general context, test systems often get lighter controls than live ones, though the university has not said how this one was set up. Exposed PINs also turn a data leak into a door-access problem, so the university is issuing new codes.