HackingProfessional ServicesProfessional ServicesDelayed DiscoveryPIILowActive

ARTHUR J. GALLAGHER & CO.

bd_0de1fa99b42cf8a1 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Jul 12, 2021

To disclose

—

Affected

Not disclosed

Linked

41 filings

Confidence

66%

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

Arthur J. Gallagher & Co. filed a supplemental data event correction with the Delaware Department of Justice on July 12, 2021. The filing corrects the intrusion timeline for an incident involving an unknown individual accessing Gallagher's network. The corrected access period is June 3, 2020, to September 26, 2020. Client notification is ongoing.

J jump to incidentP pin to compareR raw source

Incident timeline

Jun 3, 2020

Begins

Jul 12, 2021

Filed

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 · +38dVerified by operator
New Hampshire State AGbd_7a32a3fe8539d6192021-08-23 · +42dVerified by operator
Maine State AGbd_a45fd1cf66fc40d52021-09-01 · +51dVerified by operator
New Hampshire State AGbd_e05a56a536c799dd2021-09-07 · +57dVerified by operator

Show 6 more filings ↓up to 151d gap

Maine State AGbd_c453899ab04861cb2021-09-08 · +58dVerified by operator
Maine State AGbd_29bb498af183cd332021-09-13 · +63dVerified by operator
Maine State AGbd_d79b29bc558a3c712021-09-29 · +79dVerified by operator
New Hampshire State AGbd_544b44357c05bc6c2021-10-04 · +84dVerified by operator
Maine State AGbd_2831d3281e5d09eb2021-12-06 · +147dCandidate
New Hampshire State AGbd_0995d36ed3507f492021-12-10 · +151dVerified

Showing first 10 of 40 linked disclosures.

Name: Mullen Coughlin LLC
norm: mullen coughlin

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

Discovered: —
Breach occurred: Jun 3, 2020 – Sep 26, 2020
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified Delaware Department of Justice
Initial access: exploit_public_facing

During the incident: Notification to the affected Gallagher clients and individuals is ongoing
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 3 states

View merged incident ↗

Delaware State AGJul 12 · first · this page

Delaware State AG+38d

New Hampshire State AG+42d

Maine State AG+51d

New Hampshire State AG+57d

Maine State AG+58d

Maine State AG+63d

Maine State AG+79d

New Hampshire State AG+84d

Maine State AG+147d

New Hampshire State AG+151d

Pattern: first filing Jul 12 (DE), last Dec 10 (NH) — a 151-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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2021/08/1-AJG-Supplemental-Notice-DE-DOJ.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 12, 2021
Raw hash: c28777ad15e93b8af1b2910da38539209a32fcfd7da5d9c2c7e8b4def523ff34

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityARTHUR J. GALLAGHER & CO.

IncidentUnauthorized Access

Stated responseNotification to the affected Gallagher clients and individuals is ongoing

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov