Los Angeles Unified School District

Disclosed Sep 6, 2022Confirmed

Ransomware attack disrupts IT systems of second-largest US school district

LAUSD, the second-largest US school district, confirmed a cyberattack over the 2022 Labor Day weekend that disrupted its IT systems and was later confirmed as ransomware.

What is known

People affected	Not stated in the sources we have
Disclosed	Sep 6, 2022
Happened	Jul 31, 2022
Attack	Ransomware
Data exposed	Other
Sector	Education · US
Status	Confirmed

Sources

Official noticeoag.ca.gov

California Attorney General breach notice: Los Angeles Unified School District

Newstechcrunch.com

Los Angeles school district warns of disruption as it battles ongoing ransomware attack

Newstechcrunch.com

Everything we know so far about the ransomware attack on LA schools

Notices filed

TotalSep 6, 2022

ResearchCount not stated

Residents of CAJan 17, 2023

California AGCount not stated

Residents of CAMar 24, 2023

California AGCount not stated

History of this record

attack2026-09-25

unknown to ransomwareby seedSource

data_types2026-09-25

[] to ["other"]by seedSource

disclosed2026-09-25

2023-01-17 to 2022-09-06by seedSource

summary2026-09-25

empty to LAUSD, the second-largest US school district, confirmed a cyberattack over the 2022 Labor Day weekend that disrupted its IT systems and was later confirmed as ransomware.by seedSource

title2026-09-25

empty to Ransomware attack disrupts IT systems of second-largest US school districtby seedSource

disclosed2026-09-25

2023-03-24 to 2023-01-17by backfillSource

Added2026-09-25

First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

Everything about Los Angeles Unified School District