CNA Financial

1 breach75K affected in allFinancecna.com

Ransomware attack on insurer copies employee and policyholder dataRansomware exposed names, Social Security numbers, employment records, insurance details and health records. Reported to the California AG.Ransomware75K affectedInsuranceUSMar 23, 2021

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Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

data_types2026-09-25

CNA Financial, 2021-03-23["names","ssn","employment","insurance","health"]

records_basis2026-09-25

CNA Financial, 2021-03-23organization

records2026-09-25

CNA Financial, 2021-03-2375349

sector2026-09-25

CNA Financial, 2021-03-23insurance

data_types2026-09-25

CNA Financial, 2021-03-23["names","ssn","employment","insurance"]

disclosed2026-09-25

CNA Financial, 2021-03-232021-03-23

summary2026-09-25

CNA Financial, 2021-03-23CNA sustained a sophisticated ransomware attack in March 2021, and its investigation found that an unauthorized party copied personal information of some current and former employees, contractors and policyholders.

title2026-09-25

CNA Financial, 2021-03-23Ransomware attack on insurer copies employee and policyholder data

domain2026-09-25

CNA Financialcna.com

attack2026-09-25

CNA Financial, 2021-03-23ransomware

discovered2026-09-25

CNA Financial, 2021-03-232021-03-21

Added2026-09-25

CNA Financial, 2021-03-23

Added2026-09-25

CNA Financial