Every public data breach

47 disclosed this week · 26,367 on record

M&T Bank

Disclosed Jun 29, 20205,878 affectedConfirmed

Official notice

The business associate (BA), M&T Bank, reported that an employee was the victim of a social engineering attack the compromised the protected health information (PHI) of 5,878 individuals. The PHI involved includes names, addresses, financial and health insurance information, diagnoses, medications prescribed, Social Security numbers, drivers’ license numbers, and other treatment information. The BA notified HHS, affected individuals, and the media. In response to the breach, the BA implemented additional administrative and technical safeguards and retrained its staff on fraud and identity theft prevention.

What is known

People affected5,878 (as reported to HHS)
DisclosedJun 29, 2020
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

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

Everything about M&T Bank