Ransomware Intelligence / Sectors / K-12 education

Sector

Ransomware in K-12 education

School districts, charter networks and K-12 service providers.

  • 5claims, 7 days
  • 25claims, 30 days
  • 43claims, 90 days
  • 2026-10-15most recent claim

Leak-site listings are claims made by criminals, not confirmed incidents. Sector is assigned from the public listing with an automated classifier and a confidence score; 14% of claims in the last 30 days are not yet classified. If a classification looks wrong, tell us.

Activity, last 26 weeks

New leak-site claims per week against k-12 education organisations.

Week of 2026-04-20: 0Week of 2026-04-27: 0Week of 2026-05-04: 0Week of 2026-05-11: 0Week of 2026-05-18: 0Week of 2026-05-25: 0Week of 2026-06-01: 0Week of 2026-06-08: 0Week of 2026-06-15: 0Week of 2026-06-22: 0Week of 2026-06-29: 0Week of 2026-07-06: 0Week of 2026-07-13: 1Week of 2026-07-20: 4Week of 2026-07-27: 2Week of 2026-08-03: 1Week of 2026-08-10: 0Week of 2026-08-17: 2Week of 2026-08-24: 1Week of 2026-08-31: 2Week of 2026-09-07: 0Week of 2026-09-14: 7Week of 2026-09-21: 2Week of 2026-09-28: 9Week of 2026-10-05: 9Week of 2026-10-12: 3
Claims per week, oldest to newest. Each bar is a full Monday-to-Sunday week; the newest bar is the current week so far.

Most active groups, last 90 days

  1. the gentlemen 8
  2. qilin 6
  3. nightspire 4
  4. inc ransom 3
  5. interlock 2
  6. safepay 2
  7. vypr 2
  8. 3am 1
  9. booba team 1
  10. brain cipher 1

Countries, last 90 days

  1. United States 26
  2. Unknown 4
  3. United Kingdom 3
  4. Australia 2
  5. Brazil 1
  6. Canada 1
  7. Czechia 1
  8. New Zealand 1
  9. Sweden 1
  10. Türkiye 1
  11. Taiwan 1
  12. Vietnam 1

Vulnerabilities with known ransomware use

From CISA's Known Exploited Vulnerabilities catalog, newest first. The catalog is not sector-specific; if you run the product, patch it.

Added CVE Vendor / product Vulnerability
2026-08-18 CVE-2026-59310 Broadcom VMware vCenter Broadcom VMware vCenter Path Traversal Vulnerability
2026-08-05 CVE-2026-63077 JetBrains TeamCity JetBrains TeamCity Deserialization of Untrusted Data Vulnerability
2026-07-29 CVE-2026-20316 Cisco Secure Firewall Management Center (FMC) Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability
2026-07-14 CVE-2026-15410 SonicWall SMA1000 Appliances SonicWall SMA1000 Appliances Code Injection Vulnerability
2026-07-14 CVE-2026-15409 SonicWall SMA1000 Appliances SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
2026-07-01 CVE-2026-45659 Microsoft SharePoint Server Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
2026-06-25 CVE-2026-12569 PTC Windchill and FlexPLM PTC Windchill and FlexPLM Improper Input Validation Vulnerability
2026-06-12 CVE-2026-35273 Oracle PeopleSoft Enterprise PeopleTools Oracle PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function Vulnerability
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Other sectors

Data sources

  • Source: CISA KEV
    updated 2 hours ago
  • Opening demands are read from leaked ransomware negotiation chats collected by Ransomchats (MIT licence), using an OpenAI language model. These chats are not a representative sample.
    updated 2 hours ago
  • Source: RansomLook
    updated 2 hours ago
  • Sector, country and region labels are inferred by SecuritySnares from the published organisation name using an OpenAI language model; treat them as estimates.
    updated 2 hours ago

Leak-site listings reflect claims by threat actors and are not independently verified. Victims are never named on this site unless they have disclosed the incident themselves. Read the methodology.