A cyberattack on Arizona’s court system copied personal information tied to 1.3 million people, the Arizona Supreme Court said.

The affected records concerned unpaid fees, fines and restitution from traffic and criminal cases stretching back up to 30 years. Attackers also took records for nearly 30,000 active and inactive protection orders and 150,000 foster care board reports dating to 2010. The board makes recommendations in cases involving allegations that parents cannot adequately care for a child.

Investigators believe the intrusion began when a court employee clicked a malicious email link. Court technology staff stopped the attack on a backup server about two hours after detecting it on Sept. 24, and the court has notified affected people.

The attack remains under investigation. State Supreme Court spokesperson Alberto Rodriguez said there was no evidence the stolen information had subsequently been used or shared. He said court cases had not been affected or delayed, no records were changed or deleted, and information about jurors, witnesses and court employees was not stolen.