Hackers breached the Philadelphia Indemnity Insurance Company in June and stole customer data, the company said in a filing with the California Attorney General’s office. 

An unauthorized party accessed customer data during an intrusion discovered between June 9 and June 10, according to the disclosure.

The company previously called the incident a network outage, however it said there was no ransomware and no encryption. The company did report the incident to law enforcement and retained outside forensic experts to investigate.

Philadelphia Indemnity launched an investigation and determined by July 9 that the stolen data included names, drivers license numbers and dates of birth, according to the breach notice. The notice did not attribute the attack to any threat actor or disclose the total number of victims. 

The company did not immediately respond to a request for comment.

The intrusion comes amid a wave of attacks against the insurance industry that researchers have linked to the notorious cybercrime collective Scattered Spider. The group has targeted retailers, insurance firms and airlines in recent months. Both Aflac and Erie Insurance disclosed breaches in June.