DisclosureLens
GLOBALMalwareEducationEducationRansomwareMedusaRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Minneapolis Public Schools

bd_524a24e43eef8603 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Feb 17, 2023

To disclose

—

Affected

Not disclosed

Linked

8 records

Confidence

50%
Full breach record for Minneapolis Public Schools →

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Medusa 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: 2023-03-07

Source: Ransomware.live

Post text · scraped from the leak site

Minneapolis Public Schools (MPS) or Special School District Number 1 is a public school district serving students in pre-kindergarten through twelfth grade from Minneapolis, Minnesota. Minneapolis Public Schools enrolls 36,370 students in public primary and secondary schools. The district administers about one hundred public schools including forty-five elementary schools, seven middle schools, seven high schools, eight special education schools, eight alternative schools, nineteen contract alternative schools, and five charter schools. With authority granted by the state legislature, the school board makes policy, selects the superintendent, and oversees the district's budget, curriculum, personnel, and facilities. Students speak ninety different languages at home and most school communications are printed in English, Hmong, Spanish, and Somali.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Feb 17, 2023

Claim posted

—

Corroborated · see linked filings

This record's own dates cannot anchor compliance clocks; see the linked filings.

Claim → filing

—

Compliance clock

Not assessable

This leak-site claim is one of 8 records about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Show 2 more filings ↓up to 200d gap

Press reports (1)

Filing propagation · 6 filings · 6 states

View merged incident ↗
Montana State AGSep 5 · first
Indiana State AGSep 5 · first
Vermont State AGSep 5 · first
Maine State AGSep 5 · first

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 2023-01-11

medusa

According to ransomware.live, Medusa is a ransomware-as-a-service operation active since June 2021 that has targeted over 300 victims across critical infrastructure sectors including healthcare, education, legal, and manufacturing using double-extortion, with attacks surging 42% between 2023 and 2024 and a formal CISA advisory issued in early 2025.

565 tracked hereFull profile →