MalwareFinancial ServicesProfessional ServicesFinanceRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedPIIIdentity (basic)LowContained

ARTHUR J. GALLAGHER & CO.

bd_367230a44c0b4f07 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 26, 2020

Filed

Aug 4, 2021

To disclose

45 weeks

Affected

11state residents only

Linked

30 filings

Confidence

64%

Full breach record for ARTHUR J. GALLAGHER & CO. →31 incidents on file

Arthur J. Gallagher & Co. notified individuals of a ransomware incident detected on September 26, 2020. The attacker accessed data between June 3 and September 26, 2020. Impacted data included personal information. Gallagher engaged forensic specialists, took systems offline, and provided 24 months of credit monitoring. No actual misuse was confirmed.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 115 days

discovery → filing · 45 weeks / 312 days

Jun 3, 2020

Begins

Sep 26, 2020

Discovered

Aug 4, 2021

Filed

vs. sector median

+36 wks slower

This filing is one of 30 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

South Carolina State AGbd_46c22c0e135074c12021-08-17 · +13dVerified
Delaware State AGbd_4802bf691a0b05cf2021-08-17 · +13dVerified
South Carolina State AGbd_5a60d99cfc68d2f62021-08-17 · +13dVerified
Delaware State AGbd_d559ecce5b3385332021-08-19 · +15dVerified

Show 6 more filings ↓up to 61d gap

New Hampshire State AGbd_7a32a3fe8539d6192021-08-23 · +19dVerified
New Hampshire State AGbd_e05a56a536c799dd2021-09-07 · +34dVerified
South Carolina State AGbd_e1bf416a552091df2021-09-08 · +35dVerified
New Hampshire State AGbd_128a2682206fdf792021-09-13 · +40dVerified
South Carolina State AGbd_97dcb7179082a9e82021-09-30 · +57dVerified
New Hampshire State AGbd_544b44357c05bc6c2021-10-04 · +61dVerified

Showing first 10 of 29 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 23, 2021
Affected individuals: 11state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Reported this incident to law enforcement and regulatory authorities

During the incident: Took all systems offline as a precautionary measure
Initiated response protocols
Launched an investigation with the assistance of third-party cybersecurity and forensic specialists
Implemented business continuity plans
Reported this incident to law enforcement and regulatory authorities
Changes made: Reviewed existing security policies
Implemented additional measures and enhanced security tools
Implemented additional safeguards
Provided additional training to employees on data privacy and security
Provided access to identity and credit monitoring services for twenty-four months through Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 45 weeks(312 days from discovery to filing)
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 ↗

South Carolina State AGAug 4 · first · this page

South Carolina State AG+13d

Delaware State AG+13d

South Carolina State AG+13d

Delaware State AG+15d

New Hampshire State AG+19d

New Hampshire State AG+34d

South Carolina State AG+35d

New Hampshire State AG+40d

South Carolina State AG+57d

New Hampshire State AG+61d

Pattern: first filing Aug 4 (SC), last Oct 4 (NH) — a 61-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 29 — 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://consumer.sc.gov/sites/consumer/files/Documents/Business%20Resources%20Laws/Related%20Laws/Breaches/2021/NorthAmericanSpecialtyCorperation.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 4, 2021
Raw hash: 8282d44c97fd5b3c3064d733a94ea42d04f81726f2357286b3a35313611fd57b

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 systems offline as a precautionary measure

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceconsumer.sc.gov