DisclosureLens
GLOBALMalwareHealthcareHealthcareRansomwareWorldleaksRansom DemandedActor NamedMedium

Adelphi

bd_251f29e82283ff82 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Feb 11, 2026

To disclose

—

Affected

Not disclosed

Confidence

50%
Full breach record for Adelphi →2 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: HealthcareDiscovered: 2026-02-17
Listing address (not linked): https://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/8696247062

Source: Ransomware.live

Post text · scraped from the leak site

Adelphi is a global consultancy firm specializing in healthcare solutions. They operate in more than 25 countries, providing services to the pharmaceutical, biotech, and healthcare industries. They offer transformative solutions in areas like real world evidence, patient-centered outcomes, market access strategies, and medical communication. Their expertise helps clients improve patient lives through science, data, and technology.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Feb 11, 2026

Claim posted

—

No filing yet · watching

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

Claim → filing

—

Compliance clock

Not assessable

Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident

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.

No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.

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 →