MalwareFinancial ServicesFinanceRansomwareStolen CredentialsCapture Stored DataData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedRansom DemandedOpportunisticHealth (basic)Identity (basic)Government IDPHIPIIMediumContained

CNA FINANCIAL CORPORATION

bd_7f8a3a5d1d0c1ff6 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 21, 2021

Filed

Jul 8, 2021

To disclose

16 weeks

Affected

823state residents only

Linked

9 filings

Confidence

69%

Full breach record for CNA FINANCIAL CORPORATION →

CNA Financial Corporation reported a ransomware attack affecting 823 Washington residents. The threat actor gained access via a fake browser update (phishing link) on March 5, 2021, moved laterally using stolen credentials, and deployed ransomware on March 21, 2021. Data (names, SSNs, some PHI) was exfiltrated to a Mega account but recovered; no evidence of misuse was found. Notifications began July 9, 2021.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d16 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 16 days

discovery → filing · 16 weeks / 109 days

Mar 5, 2021

Begins

Mar 21, 2021

Discovered

Jul 8, 2021

Filed

vs. sector median

+7 wks slower

This filing is one of 9 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

California State AGbd_2498cf3d61584cfe2021-07-08Candidate
Massachusetts State AGbd_53180e7c81f57e152021-07-08Verified
HHS OCRbd_641fa664e7fa983f2021-07-08Verified
Maine State AGbd_7abcb947b9a916802021-07-08Verified

Show 4 more filings ↓up to 4d gap

Montana State AGbd_107e3f0f52c95ee92021-07-09 · +1dVerified
Oregon State AGbd_8f8adf6678098d272021-07-09 · +1dVerified
Indiana State AGbd_eb7c4eb9cabf7a572021-07-09 · +1dVerified
New Hampshire State AGbd_bdd258432c11e6292021-07-12 · +4dVerified

Name: Norton Rose Fulbright US LLP
norm: norton rose fulbright us

Name: CNA FINANCIAL CORPORATION
norm: cna financial
Domain: cna.com
Industry: Financial Servicesllm

Discovered: Mar 21, 2021
Breach occurred: Mar 5, 2021 – Mar 21, 2021
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 9, 2021
Affected individuals: 823state-resident count only
Data types: Health (basic)Identity (basic)Government IDPHIPII
Data elements: NameSocial Security numberDate of birthMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1074 Data StagedT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Reported the Incident to federal law enforcement (FBI)
Initial access: phishing_link

During the incident: Began implementing containment steps
Launched an investigation
Engaged third-party cybersecurity experts to assist
Reported the Incident to federal law enforcement
Took control of the account and quickly recover CNA’s data
Conducting dark web scans and searches for CNA-related information
Changes made: Deploying additional endpoint detection and response tools to systems across the environment
Enhancing network restrictions
Accelerating its existing project to implement an advanced privilege access management solution
Engaging a new managed security service provider
Working with external cybersecurity experts to evaluate additional opportunities to further enhance CNA’s information security program
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(109 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 9 states

View merged incident ↗

California State AGJul 8 · first

Massachusetts State AGJul 8 · first

HHS OCRJul 8 · first

Maine State AGJul 8 · first

Washington State AGJul 8 · first · this page

Montana State AG+1d

Oregon State AG+1d

Indiana State AG+1d

New Hampshire State AG+4d

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM10476.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 8, 2021
Raw hash: 95f171958adc1173f51d6e890f30fbe1859114c59ea0f43664947c999a1f57c0

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityNorton Rose Fulbright US LLP

Victim entityCNA FINANCIAL CORPORATION

Incidentdiscovered Mar 21, 2021

Stated responseBegan implementing containment steps

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com