ILLINOISMalwareHealthcareHealthcareRansomwareBusiness Associate (HIPAA)Customer Data InvolvedData ExfiltratedData EncryptedRansom DemandedPHIHealth (basic)Identity (basic)Government IDCriticalContained

Aon

bd_1659c519cbbc9194 · schema v1 · pii pii-v1

Severity

Critical

Discovered

—

Filed

May 26, 2022

To disclose

—

Affected

129,682

Linked

14 filings

Confidence

68%

Full breach record for Aon →11 incidents on file

Aon PLC reported to HHS on 2022-05-26 a Hacking/IT Incident affecting 129,682 individuals. Breached information located on Network Server. The incident involved ransomware encrypting PHI including names, DOBs, SSNs, and driver's license numbers.

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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

May 26, 2022

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 14 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitedispossessorbd_d4e9fb69d737f7a62022-07-03 · +38dVerified by operator

Regulatory filings (9) · sorted by filing gap

Oregon State AGbd_a34b45e6fa897e082022-05-26Verified
California State AGbd_a3a4b3bd3ddac8fc2022-05-26Verified
Maine State AGbd_bdef13158191852d2022-05-26Candidate
Indiana State AGbd_fde32f8598ecaa8b2022-05-27 · +1dVerified

Show 5 more filings ↓up to 36d gap

New Hampshire State AGbd_bed97e68b6fb0b6c2022-05-31 · +5dVerified by operator
New Hampshire State AGbd_5ba6400246ccb57f2022-06-13 · +18dVerified by operator
Montana State AGbd_f3bea3092e6d8ecc2022-06-13 · +18dVerified by operator
Maine State AGbd_ee7cfc9886fcd7132022-06-24 · +29dCandidate
Maine State AGbd_83344b1fed7fdb7a2022-07-01 · +36dCandidate

Showing first 10 of 13 linked disclosures.

Name: Aon
norm: aon
Domain: aon.com
Industry: Health Care Services

Name: Aon
norm: aon
Domain: aon.com
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 129,682nationwide
Data types: PHIHealth (basic)Identity (basic)Government ID
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Business associate
Attack vector: Unauthorized Access
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified HHS

During the incident: Offered complimentary credit monitoring and identity theft protection services
Implemented additional administrative and technical safeguards
Staff were also retrained on protecting and securing PHI
Changes made: Implemented additional administrative and technical safeguards
Staff were also retrained on protecting and securing PHI
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 · 10 filings · 7 states

View merged incident ↗

Oregon State AGMay 26 · first

California State AGMay 26 · first

Maine State AGMay 26 · first

HHS OCRMay 26 · first · this page

Indiana State AG+1d

New Hampshire State AG+5d

New Hampshire State AG+18d

Montana State AG+18d

Maine State AG+29d

Maine State AG+36d

Pattern: first filing May 26 (OR), last Jul 1 (ME) — a 36-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 13 — the full spread may be wider.

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: May 26, 2022
Raw hash: 5bdbbfbe93cec199ac0317441722c15067e04b101cba2dae4cb28267acc3a4c3

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Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityAon

Victim entityAon

IncidentUnauthorized Access

Stated responseOffered complimentary credit monitoring and identity theft protection services

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing