MalwareFinancial ServicesProfessional ServicesFinanceRansomwareData ExfiltratedDelayed DiscoveryTargetedPIIIdentity (basic)MediumContained

ARTHUR J. GALLAGHER & CO.

bd_f58fe68394a8f185 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 26, 2020

Filed

Jul 8, 2021

To disclose

41 weeks

Affected

2,345state residents only

Linked

41 filings

Confidence

65%

Full breach record for ARTHUR J. GALLAGHER & CO. →14 incidents on file

Arthur J. Gallagher & Co. notified individuals of a ransomware incident detected on September 26, 2020. Unauthorized access occurred between June 3 and September 26, 2020. The breach impacted PII including names and contact information. Notifications were sent on June 30, 2021, offering 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Hawaii clock✓ HI CRA notice due41 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 115 days

discovery → filing · 41 weeks / 285 days

Jun 3, 2020

Begins

Sep 26, 2020

Discovered

Jul 8, 2021

Filed

vs. sector median

+33 wks slower

This filing is one of 41 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Delaware State AGbd_d559ecce5b3385332021-08-19 · +42dVerified by operator
New Hampshire State AGbd_7a32a3fe8539d6192021-08-23 · +46dVerified by operator
Maine State AGbd_a45fd1cf66fc40d52021-09-01 · +55dVerified by operator
New Hampshire State AGbd_e05a56a536c799dd2021-09-07 · +61dVerified by operator

Show 6 more filings ↓up to 155d gap

Maine State AGbd_c453899ab04861cb2021-09-08 · +62dVerified by operator
Maine State AGbd_29bb498af183cd332021-09-13 · +67dVerified by operator
Maine State AGbd_d79b29bc558a3c712021-09-29 · +83dVerified by operator
New Hampshire State AGbd_544b44357c05bc6c2021-10-04 · +88dVerified by operator
Maine State AGbd_2831d3281e5d09eb2021-12-06 · +151dCandidate
New Hampshire State AGbd_0995d36ed3507f492021-12-10 · +155dVerified

Showing first 10 of 40 linked disclosures.

Name: ARTHUR J. GALLAGHER & CO.
norm: arthur j gallagher

Name: ARTHUR J. GALLAGHER & CO.
norm: arthur j gallagher
Industry: Financial ServicesllmProfessional Servicesllm

Discovered: Sep 26, 2020
Breach occurred: Jun 3, 2020 – Sep 26, 2020
Undetected for: 115 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 30, 2021
Affected individuals: 2,345state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: reported this incident to law enforcement and regulatory authorities
Initial access: valid_credentials

During the incident: Took all our systems offline
Initiated response protocols
Launched an investigation with the assistance of third-party cybersecurity and forensic specialists
Implemented our business continuity plans
Ensured the ongoing security of our systems
Conducted an extensive review of the entire contents of the impacted systems
Reported this incident to law enforcement and regulatory authorities
Providing you access, at no cost, to identity and credit monitoring services for twenty-four (24) months through Kroll
Changes made: Reviewed existing security policies
Implemented additional measures and enhanced security tools
Implemented additional safeguards
Providing additional training to our employees on data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 41 weeks(285 days from discovery to filing)
Compliance flags: HI CRA notice due
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 4 states

View merged incident ↗

Hawaii State AGJul 8 · first · this page

Delaware State AG+42d

New Hampshire State AG+46d

Maine State AG+55d

New Hampshire State AG+61d

Maine State AG+62d

Maine State AG+67d

Maine State AG+83d

New Hampshire State AG+88d

Maine State AG+151d

New Hampshire State AG+155d

Pattern: first filing Jul 8 (HI), last Dec 10 (NH) — a 155-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 40 — 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://web.archive.org/web/20211127200109id_/https://cca.hawaii.gov/ocp/files/2021/11/OCP-2021-1070.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 8, 2021
Raw hash: 36ce5bc9398af0374970bffdfbc268fd166de989b235c8306e3f8054e77b43b5

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityARTHUR J. GALLAGHER & CO.

Victim entityARTHUR J. GALLAGHER & CO.

Incidentdiscovered Sep 26, 2020

Stated responseTook all our systems offline

ComplianceHI CRA notice due

Extraction provenanceno artifact recorded

Source provenanceweb.archive.org