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GLOBALMalwareProfessional ServicesProfessional ServicesRansomwareBianlianRansom DemandedActor NamedMedium

Drost Kivlahan McMahon & O'Connor LLC

bd_ad42d877b2791beb · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Feb 9, 2024

To disclose

—

Affected

Not disclosed

Linked

8 filings

Confidence

50%
Full breach record for Drost Kivlahan McMahon & O'Connor LLC →

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group BianLian on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: Business ServicesDiscovered: 2024-02-09
View aggregator listing on ransomware.liveView merged incident timeline

Source: Ransomware.live

Post text · scraped from the leak site

Drost Kivlahan McMahon & O'Connor LLC has been establishing lasting relationships with individuals and businesses since 1987. The firm's success is based on the professional and efficient representation of each client in a convenient and friendly atmosphere. The cornerstone of the practice is the firm's ability to respond to client needs in a timely and practical manner while providing high quality legal services.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Feb 9, 2024

Claim posted

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

—

Compliance clock

Not assessable

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Show 3 more filings ↓up to 201d gap

Filing propagation · 8 filings · 7 states

View merged incident ↗
Leak SiteFeb 9 · first · this page
Illinois State AG+173d
Maine State AG+201d
Montana State AG+201d
Massachusetts State AG+201d
New Hampshire State AG+201d
Vermont State AG+201d
Indiana State AG+201d

Pattern: first filing Feb 9, last Aug 29 (IN) — a 201-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this groupFirst seen 2022-07-14

bianlian

According to ransomware.live, BianLian ransomware operations began in late 2021. The group practices multi-pronged extortion, demanding payment for a decryptor, as well as the non-release of stolen data. The ransomware group hosts a public, TOR-based, blog to post victim identities and stolen data. Somewhat unique to BianLian at the time of their launch was their inclusion of an I2P mirror for their blog.

578 tracked hereFull profile →