BreachCensus

CNA Financial Corporation

InsuranceUnited States of America

CNA Financial Corporation is an insurance organisation in Washington. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register and the Washington State Attorney General breach-notification register with 1 confirmed incident; the most recent notice was filed on July 8, 2021.

Headquarters
Chicago, United States
LEI
549300YX2GSZD7YG1R84
Wikidata
Q5013072

Data as of September 6, 2026.

Confirmed incident

Filed in WA, CA and MA — Ransomware Attack

The same incident was filed separately with 3 jurisdictions within a few days of each other (WA, CA and MA) — shown here as one incident.

Occurred
March 5, 2021
Disclosed
July 8, 2021

Timeline

  1. July 8, 2021
    Reported to regulator Regulator

    WA AG breach notification: 823 Washington residents affected

    source
  2. July 8, 2021
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  3. July 8, 2021
    Reported to regulator Regulator

    MA AG breach notification: 1,206 Massachusetts residents affected

    source
What a Washington notice means

Governed by RCW 19.255.010. Notice to the Attorney General is required when a breach affects more than 500 Washington residents.

Note: the count is Washington residents only, not a total.

Washington breach-notification register ↗

What a California notice means

Governed by Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

What a Massachusetts notice means

Governed by M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗