Keenan & Associates

Disclosed Nov 20, 201510 years ago35,404 affectedConfirmed

What is known

People affected	35,404 (as reported to HHS)
Disclosed	Nov 20, 2015
Happened	Oct 9, 2015
Attack	Insider
Data exposed	Names, Social Security numbers, Health
Sector	Healthcare · US
Status	Confirmed

Source	Kind
California Attorney General breach notice: Keenan & Associatesoag.ca.gov · Official notice	Official notice
Maine Attorney General breach notice archive: Keenan & Associatesmaine.gov · Official notice	Official notice
HHS OCR breach report (archive, resolved): Keenan & Associates (Business Associate, CA)ocrportal.hhs.gov · Official notice	Official notice

Where	Filed	People
Maine AGresidents of ME	Nov 20, 2015
California AGresidents of CA	Dec 1, 2015
HHS archivetotal	Dec 1, 2015	35,404

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Dec 11, 2023Dec 11, 20232 years agoRansomware	Dec 11, 20232 years ago	Ransomware	Insurance	Confirmed	1.5M

History of this record

2026-09-25 · sector: other to health · backfill source
2026-09-25 · attack: unknown to insider · backfill source
2026-09-25 · data_types: ["names","ssn"] to ["names","ssn","health"] · backfill source
2026-09-25 · records_basis: empty to hhs · backfill source
2026-09-25 · records: empty to 35404 · backfill source
2026-09-25 · data_types: [] to ["names","ssn"] · backfill source
2026-09-25 · disclosed: 2015-12-01 to 2015-11-20 · 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.