FBI, DHS join probe into cyberattack that disabled Los Angeles public school system computers

The FBI and Department of Homeland Security is helping local law enforcement investigate the cyberattack that disabled computer systems in the Los Angeles Unified School District  – with officials saying the attack was criminal in nature.

Officials also said a ransomware tool was used in the attack but that no ransom demand has been made. 

By Tuesday, most online services, including emergency systems, were back online and operating safely, according to the Los Angeles Times.

The L.A. school district is the second-largest school system in the county.

The attack was detected late Saturday night.

In addition to taking the district’s website offline, the attack resulted in staff and students losing access to email and disabled systems that allow teachers to post lessons and take attendance

L.A. schools Superintendent Alberto Carvalho said no Social Security numbers or medical information was stolen, the newspaper also reports.