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California School Employees Association

Claimed by Ransomhouse · listed 3 days ago

2d
Age
since listed · data leaked

Status timeline

  1. ListedSep 10, 2026
  2. Data leakeddate unknown

At a glance

Group
Ransomhouse
Status
Data leaked
Country
United States
Sector
Education
Listed on leak site
Sep 10, 2026

About the victim

AI dossier — public-source company profile

The California School Employees Association (CSEA) is a labor union and advocacy organization representing classified school employees across California. It provides member benefits including financial services, legal assistance, insurance, and educational resources, and advocates for public education policy and worker rights.

Industry
Labor Union & Advocacy – Education

Attack summary

Severity: low — No proof files, screenshots, or specific data inventory is advertised. The leak post contains only a generic organizational description with no evidence of exfiltration or encryption. Designation remains unverified.

The ransomware operator claims to have breached CSEA and published data. No specific data types, volumes, or operational impact are detailed in the leak post.

low

What the group claims

The California School Employees Association (CSEA) is dedicated to supporting classified school employees and advocating for public education. They offer a range of member benefits including financial services, legal help, and educational resources. CSEA aims to protect the rights of its members while promoting quality education for students. Their intended clients include school employees, retirees, and individuals interested in joining their advocacy efforts.

Sources

Source

Indexed 3 days ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Ransomhouse

Ransomhouse is a ransomware group that emerged in June 2021, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors globally. The group's origin and specific affiliations remain unclear based on publicly available intelligence, though their operational patterns suggest they function as an independent cybercriminal organization rather than a traditional ransomware-as-a-service model. Ransomhouse employs double extortion tactics, stealing sensitive data before deploying their ransomware payload and threatening to publish the information on their leak site if victims refuse to pay the demanded ransom. The group has demonstrated a broad targeting approach, with documented attacks against 187 victims primarily concentrated in the United States, China, United Kingdom, Italy, and Spain, focusing heavily on healthcare, technology, business services, and manufacturing sectors. While specific high-profile campaigns have not been extensively documented by major security firms, the group's consistent victim count and geographic distribution indicate sustained operational capability since their emergence. As of current reporting, Ransomhouse remains active with no known major law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 229 public disclosures across our corpus. First observed on a leak site on June 1, 2021; most recent post September 10, 2026. The operation is currently active.

Also tracked as: RANSOM HOUSE.

Timeline of this disclosure

  • September 10, 2026California School Employees Association listed by Ransomhouse on the group's public leak site

Other recent disclosures by Ransomhouse

Ransomhouse has been linked to 229 public victims on Darkfield. A sample of the most recent:

See the full Ransomhouse dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,087 disclosures indexed across all operators we track. Geographically, California School Employees Association is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomhouse means California School Employees Association appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
  • Monitor for the data appearing on Ransomhouse's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.