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Regulator-posted notice

Breach notice filed by M&T Bank (June 2020)

Organization named: M&T Bank Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Unauthorized Access/Disclosure

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of June 29, 2020.

Organization as reported
M&T Bank, NY
Entity type as reported
Business Associate
Category as reported
Unauthorized Access/Disclosure
Location of information as reported
Email
Submission date
June 29, 2020
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 12806, row:3945)
Archived copy
Held in the private archive (provenance)

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.

The source's own words, from the revision above.

Figures, per source

  • 5,878 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date June 29, 2020, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 12806)
  • Approved by a reviewer

Organizations linked by a reviewer

  • M&T Bank Named as a service provider Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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