NEW YORKHackingHealthcareHealthcarePHIHealth (basic)Identity (basic)Government IDFinancial accountHighContained

M&T BANK CORPORATION

bd_59b62d24ea067302 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jun 29, 2020

To disclose

—

Affected

5,878

Linked

3 filings

Confidence

69%

Full breach record for M&T BANK CORPORATION →13 incidents on file

M&T Bank reported to HHS on 2020-06-29 a Unauthorized Access/Disclosure affecting 5,878 individuals. Breached information located on Email. An employee was victim of a social engineering attack compromising PHI including names, addresses, financial/health insurance info, diagnoses, medications, SSNs, and driver's license numbers. The business associate implemented additional safeguards and retrained staff.

J jump to incidentP pin to compareR raw source

HIPAA clock✓ HHS notified

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Jun 29, 2020

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_546621488bccc7422020-07-06 · +7dVerified
Montana State AGbd_ea36eff90c5e5ed72020-07-10 · +11dVerified

Name: M&T BANK CORPORATION
norm: m t bank
Domain: mtb.com
Industry: Business Associate

Name: M&T BANK CORPORATION
norm: m t bank
Domain: mtb.com
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 5,878nationwide
Data types: PHIHealth (basic)Identity (basic)Government IDFinancial account
HHS breach type: Unauthorized access or disclosure
Where the data lived: Email
Covered-entity type: Business associate
Attack vector: Unauthorized Access
MITRE ATT&CK: T1566 PhishingT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified HHS
Third party: via M&T Bankbusiness associate
Initial access: phishing_link

During the incident: Notified HHS
Notified affected individuals
Notified the media
Implemented additional administrative and technical safeguards
Retrained its staff on fraud and identity theft prevention
Changes made: Implemented additional administrative and technical safeguards
Retrained its staff on fraud and identity theft prevention
Source: Quoted from the filing itself, not independently verified.

Compliance flags: HHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

HHS OCRJun 29 · first · this page

Massachusetts State AG+7d

Montana State AG+11d

Pattern: first filing Jun 29 (NY), last Jul 10 (MT) — a 11-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Jun 29, 2020
Raw hash: 721d85e879bc1be407a4e95b1bcb977a98d89b3b3114f7ed4c8c3631e295642e

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

text/html1.6 KB

Download View at source

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityM&T BANK CORPORATION

Victim entityM&T BANK CORPORATION

IncidentUnauthorized Access

Stated responseNotified HHS

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing