DisclosureLens
GLOBALMalwareFinancial ServicesFinanceRansomwareWorldleaksRansom DemandedActor NamedMedium

CHATHAM ASSET MANAGEMENT, LLC

bd_d1d7d80084f44232 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Dec 23, 2025

To disclose

Affected

Not disclosed

Linked

4 filings

Confidence

50%
Full breach record for CHATHAM ASSET MANAGEMENT, LLC2 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Worldleaks 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: Financial ServicesDiscovered: 2025-12-23
Listing address (not linked): https://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/2396947203View merged incident timeline

Source: Ransomware.live

Post text · scraped from the leak site

Chatham Asset Management is a private investment firm specializing in various sectors like media, real estate, and more. They primarily focus on improving operations, promoting growth, reducing costs, and increasing profits. They also aim at managing companies that are undervalued or facing financial difficulties. Established in 2002, it is headquartered in Chatham, New Jersey, USA.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Dec 23, 2025

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 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Filing propagation · 4 filings · 3 states

View merged incident ↗
Leak SiteDec 23 · first · this page

Pattern: first filing Dec 23, last Jan 20 (VT) — a 28-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 2022-06-23

worldleaks

According to ransomware.live, World Leaks emerged in January 2025 as a rebrand of the Hunters International ransomware operation, shifting its focus from file encryption to solely stealing sensitive data and threatening to leak it unless a ransom is paid

187 tracked hereFull profile →