norm: arch insuranceUSno LEI · no CIKMax severity: Medium↳ subsidiary of Arch Capital Group Ltd.

Canonical registry

Arch Insurance Company

ent_ac154e53dc9d2def98c2db84

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Disclosures

1

State AG · 1 jurisdiction

Multi-filing incidents

—

no multi-filing incident in sample

Max affected reported

950

as filed · State AG SC

Leak-site claims

0

none in sample

Identity resolution

Canonical name: Arch Insurance Company
Normalized: arch insurance— dedupe via name-norm; Microsoft / MSFT collapse to one row
GLEIF LEI: No match
SEC EDGAR CIK: None — not an SEC registrant
Domain: None on record
Corporate parent: Arch Capital Group Ltd.— per SEC Exhibit 21 filing

Disclosure history (1)newest first

South Carolina State AGas victim2021-08-17
Arthur J. Gallagher & Co. reported a ransomware incident detected on September 26, 2020, affecting systems accessed between June 3 and September 26, 2020. The breach impacted PII including government IDs. Gallagher engaged forensic specialists, took systems offline, and provided 24 months of credit monitoring. No specific victim count was disclosed in this notice.