Mattson Technology

Disclosed Mar 17, 20224 years agoConfirmed

Official notice

What is known

People affected	Not stated in the sources we have
Disclosed	Mar 17, 2022
Happened	Apr 11, 2023
Attack	Not stated
Data exposed	Not stated
Sector	Other · US
Status	Confirmed

Sources

Source	Kind
California Attorney General breach notice: Mattson Technologyoag.ca.gov · Official notice	Official notice
Vermont Attorney General: 2022-03-17 Mattson Technology Data Breach Notice to Consumersago.vermont.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Vermont AGresidents of VT	Mar 17, 2022
California AGresidents of CA	Oct 27, 2023
California AGresidents of CA	Sep 24, 2024

History of this record

2026-09-25 · disclosed: 2023-10-27 to 2022-03-17 · backfill source
2026-09-25 · disclosed: 2024-09-24 to 2023-10-27 · backfill source
2026-09-25 · added · backfill source

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

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