MalwareProfessional ServicesProfessional ServicesRansomwareData ExfiltratedRansom DemandedTargetedFinancial accountHealth (basic)Identity (basic)Government IDPHIMediumContained

Wisner Baum LLP

bd_37073d78a5d8020d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 15, 2025

Filed

Jan 23, 2026

To disclose

6 weeks

Affected

717state residents only

Linked

11 filings

Confidence

68%

Full breach record for Wisner Baum LLP →

Wisner Baum LLP experienced a ransomware incident between Oct 8-9, 2025. Unauthorized access may have acquired client files containing names, SSNs, driver's licenses, bank details, and medical info. 717 Washington residents affected. Notification began Jan 23, 2026. Credit monitoring offered. Systems isolated and investigation launched.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d6 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 · 68 days

discovery → filing · 6 weeks / 39 days

Oct 8, 2025

Begins

Dec 15, 2025

Discovered

Jan 23, 2026

Filed

vs. sector median

13 wks faster

This filing is one of 11 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Oregon State AGbd_10178ff4c457f8c32026-01-23Candidate
Massachusetts State AGbd_414e8f031fe308ff2026-01-23Verified
California State AGbd_4f695f7cf771e9832026-01-23Verified
Indiana State AGbd_60ec407520bd24882026-01-23Verified

Show 6 more filings ↓up to 22d gap

Vermont State AGbd_65e3679b02b128fe2026-01-23Verified
Indiana State AGbd_cbc68f1752ed6e5d2026-01-23Verified
Nebraska State AGbd_ccdcb9570f81d5f92026-01-23Verified
Maine State AGbd_d08c7349ab190a952026-01-23Verified
Texas State AGbd_7e40321d8677cf662026-01-27 · +4dVerified
Illinois State AGbd_3f3b760f00242c122026-01-01 · +22dVerified

Name: Wisner Baum LLP
norm: wisner baum

Name: Wisner Baum LLP
norm: wisner baum
Industry: Professional Servicesllm

Discovered: Dec 15, 2025
Breach occurred: Oct 8, 2025 – Oct 9, 2025
Undetected for: 68 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jan 23, 2026
Affected individuals: 717state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial

During the incident: Isolated the computers from its IT network
Launched an investigation
Undertook a comprehensive search and review of the files
Mail notification letters via United States Postal Service First-Class mail
Offering individuals whose Social Security and/or driver’s license numbers may have been involved in the incident complimentary one-year memberships to credit monitoring services through CyberScout
Established a dedicated, toll-free call center to answer questions
Changes made: Implemented, and will continue to adopt, additional safeguards and technical security measures to further protect and monitor its systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(39 days from discovery to filing)
Compliance flags: WA AG >30d
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 · 11 filings · 10 states

View merged incident ↗

Illinois State AGJan 1 · first

Oregon State AG+22d

Massachusetts State AG+22d

California State AG+22d

Indiana State AG+22d

Vermont State AG+22d

Indiana State AG+22d

Nebraska State AG+22d

Maine State AG+22d

Washington State AG+22d · this page

Texas State AG+26d

Pattern: first filing Jan 1 (IL), last Jan 27 (TX) — a 26-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/BreachA36337.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 23, 2026
Raw hash: 2991916af8aa098ac584ce96a7658caa064c9f8842caefd694d5ff37ecaddc10

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWisner Baum LLP

Victim entityWisner Baum LLP

Incidentdiscovered Dec 15, 2025

Stated responseIsolated the computers from its IT network

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com