On Wednesday 14th April, the University of Hertfordshire was hit by a cyber attack that has taken down its entire IT network and has also blocked access to cloud-based services.
With all its systems affected by the attack, the university halted its online teaching on both Thursday and Friday, and said other classes may go ahead, but “students will have no on-site or remote access to computer facilities in the LRCs (learning resources centres), labs or the university wi-fi”
Further information about this can be found here and on the BBC News.