DisclosureLens
GLOBALMalwareEducationEducationRansomwareMedusalockerRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Académie de Montpellier / CSJM

bd_c4d07bf5b16b5542 · schema v1 · pii pii-v1

Severity

High

Discovered

Filed

May 5, 2026

To disclose

Affected

Not disclosed

Confidence

50%
Full breach record for Académie de Montpellier / CSJM2 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Medusalocker 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: EducationDiscovered: 2026-05-05

Source: Ransomware.live

Post text · scraped from the leak site

French public school network. Domain CSJM.BEZIERS, part of Académie de Montpellier (ac-montpellier.fr). Occitanie region (laregion.fr). Teacher and admin staff credentials.

Incident timeline — mostly unverified

? — ?

Breach window unknown

May 5, 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 2021-11-03

medusalocker

According to ransomware.live, Medusa is a DDoS bot written in .NET 2.0. In its current incarnation its C&C protocol is based on HTTP, while its predecessor made use of IRC.

94 victims claimed globally94 tracked hereFull profile →