HackingDelayed DiscoveryCustomer Data InvolvedIdentity (basic)Government IDCritical

ARTHUR J. GALLAGHER & CO.

bd_29bb498af183cd33 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jun 23, 2021

Filed

Sep 13, 2021

To disclose

12 weeks

Affected · nationwide

104,52636 in this filing

Linked

41 filings

Confidence

63%

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

Arthur J. Gallagher & Co. experienced an external system breach between June 3, 2020, and September 26, 2020. The incident, discovered on June 23, 2021, resulted in the compromise of names and Social Security numbers. The company notified the 36 affected Maine residents on September 13, 2021, and offered 24 months of identity protection services through Kroll.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jun 23, 2021 → Filed with AG Sep 13, 202182d ⏱ ME AG >30d12 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 385 days

discovery → filing · 12 weeks / 82 days

Jun 3, 2020

Begins

Jun 23, 2021

Discovered

Sep 13, 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

Maine State AGbd_c453899ab04861cb2021-09-08 · +5dVerified by operator
New Hampshire State AGbd_e05a56a536c799dd2021-09-07 · +6dVerified by operator
Maine State AGbd_a45fd1cf66fc40d52021-09-01 · +12dVerified by operator
Maine State AGbd_d79b29bc558a3c712021-09-29 · +16dVerified by operator

Show 6 more filings ↓up to 88d gap

New Hampshire State AGbd_544b44357c05bc6c2021-10-04 · +21dVerified by operator
New Hampshire State AGbd_7a32a3fe8539d6192021-08-23 · +21dVerified by operator
Delaware State AGbd_d559ecce5b3385332021-08-19 · +25dVerified by operator
Maine State AGbd_45e73c05af0477862021-08-17 · +27dVerified by operator
Maine State AGbd_2831d3281e5d09eb2021-12-06 · +84dCandidate
New Hampshire State AGbd_0995d36ed3507f492021-12-10 · +88dVerified

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

Discovered: Jun 23, 2021
Breach occurred: Jun 3, 2020 – Sep 26, 2020
Undetected for: 385 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 13, 2021
Affected individuals: 104,526state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
Threat actor: External

During the incident: Offered 24 months of identity theft protection services through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(82 days from discovery to filing)
Compliance flags: ME AG >30d · 82d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jun 23, 2021
→ Filed with AG: Sep 13, 2021
82d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jun 23, 2021 → Filed with AG: Sep 13, 2021	82d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 3 states

View merged incident ↗

Maine State AGAug 17 · first

Delaware State AG+2d

New Hampshire State AG+6d

Maine State AG+15d

New Hampshire State AG+21d

Maine State AG+22d

Maine State AG+27d · this page

Maine State AG+43d

New Hampshire State AG+48d

Maine State AG+111d

New Hampshire State AG+115d

Pattern: first filing Aug 17 (ME), last Dec 10 (NH) — a 115-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/f63fdfd7-d8a5-41a6-a3e2-f5cfcd189aaf.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 13, 2021
Raw hash: 848a92ae2911a12b2fd94045d5be88f512a4c196a106e33db883d579e96560d0

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityARTHUR J. GALLAGHER & CO.

Victim entityARTHUR J. GALLAGHER & CO.

Incidentdiscovered Jun 23, 2021

Stated responseOffered 24 months of identity theft protection services through Kroll

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov