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HARRIS BEACH MURTHA CULLINA PLLC

bd_29ef2cfa7c13d59a · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Apr 15, 2026

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

50%
Full breach record for HARRIS BEACH MURTHA CULLINA PLLC →3 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Silentransomgroup 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: 2026-04-15
View aggregator listing on ransomware.liveView merged incident timeline

Source: Ransomware.live

Post text · scraped from the leak site

Harris Beach Murtha is a full-service law firm operating in the United States, primarily in the northeastern region. Formed through the merger of Harris Beach and Murtha Cullina, the firm provides legal services across areas including corporate law, litigation, real estate, healthcare, and public finance. It serves clients ranging from businesses and municipalities to nonprofits and individuals across Connecticut, New York, and nearby states.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Apr 15, 2026

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 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings

View merged incident ↗
Leak SiteApr 15 · first · this page
Indiana State AG+29d

Pattern: first filing Apr 15, last May 15 (IN) — a 29-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 2022-06-07

silentransomgroup

According to ransomware.live, a former Conti team

165 tracked hereFull profile →