MalwareProfessional ServicesProfessional ServicesRansomwareData ExfiltratedData EncryptedDelayed DiscoveryPIIIdentity (basic)LowContained

ARTHUR J. GALLAGHER & CO.

bd_97dcb7179082a9e8 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 26, 2020

Filed

Sep 30, 2021

To disclose

12 months

Affected

1state residents only

Linked

30 filings

Confidence

64%

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

Arthur J. Gallagher & Co. notified South Carolina residents of a ransomware incident detected on September 26, 2020. The attack impacted internal systems between June 3 and September 26, 2020. Gallagher took systems offline, engaged forensic specialists, and reported to law enforcement. The breach affected individual data (PII). Affected individuals received 24 months of credit monitoring via Kroll. The incident status is contained.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 115 days

discovery → filing · 12 months / 369 days

Jun 3, 2020

Begins

Sep 26, 2020

Discovered

Sep 30, 2021

Filed

vs. sector median

+35 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

New Hampshire State AGbd_544b44357c05bc6c2021-10-04 · +4dVerified
New Hampshire State AGbd_128a2682206fdf792021-09-13 · +17dVerified
South Carolina State AGbd_e1bf416a552091df2021-09-08 · +22dVerified
New Hampshire State AGbd_e05a56a536c799dd2021-09-07 · +23dVerified

Show 6 more filings ↓up to 44d gap

New Hampshire State AGbd_7a32a3fe8539d6192021-08-23 · +38dVerified
Delaware State AGbd_d559ecce5b3385332021-08-19 · +42dVerified
South Carolina State AGbd_46c22c0e135074c12021-08-17 · +44dVerified
Delaware State AGbd_4802bf691a0b05cf2021-08-17 · +44dVerified
South Carolina State AGbd_5a60d99cfc68d2f62021-08-17 · +44dVerified
South Carolina State AGbd_d8eb454e540101202021-08-17 · +44dVerified

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: Professional Servicesllm

Discovered: Sep 26, 2020
Breach occurred: Jun 3, 2020 – Sep 26, 2020
Undetected for: 115 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 24, 2021
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: reported this incident to law enforcement and regulatory authorities

During the incident: Took all our systems offline as a precautionary measure
Initiated response protocols
Launched an investigation with the assistance of third-party cybersecurity and forensic specialists
Implemented our business continuity plans to minimize disruption to our customers
Ensured the ongoing security of our 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 months through Kroll
Changes made: Reviewed existing security policies and implemented additional measures and enhanced security tools to further protect information in our systems
Implemented additional safeguards and are providing additional training to our employees on data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 months(369 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 17 · first

Delaware State AGAug 17 · first

South Carolina State AGAug 17 · first

Delaware State AG+2d

New Hampshire State AG+6d

New Hampshire State AG+21d

South Carolina State AG+22d

New Hampshire State AG+27d

South Carolina State AG+44d · this page

New Hampshire State AG+48d

Pattern: first filing Aug 17 (SC), last Oct 4 (NH) — a 48-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/ClaycoCorp.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 30, 2021
Raw hash: 75992e6121342735bb6cc1e7f255a4fa97fb63d6ae59f02450e60b33a55d4e60

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 as a precautionary measure

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceconsumer.sc.gov