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Uniwersytet Warszawski

Claimed by Interlock · listed 3 months ago

3m
Age
since listed · data leaked

Status timeline

  1. ListedApr 15, 2026
  2. Data leakeddate unknown

At a glance

Group
Interlock
Status
Data leaked
Country
Poland
Sector
Education
Listed on leak site
Apr 15, 2026

About the victim

AI dossier — public-source company profile

Uniwersytet Warszawski (University of Warsaw) is one of Poland's largest and most prestigious public research universities, located in Warsaw. It offers over 300 study programmes across undergraduate, graduate, and doctoral levels, and is a member of the 4EU+ European university alliance. The university has tens of thousands of students and a substantial academic and administrative staff.

Industry
Higher Education
Address
Krakowskie Przedmieście 26/28, 00-927 Warsaw, Poland
Employees
5001-10000
Founded
1816

Attack summary

Severity: high — Confirmed exfiltration and publication of PII belonging to students and academic staff at a major public university, including personal records and academic work, constitutes significant sensitive data exposure at institutional scale.

The Interlock ransomware group claims to have exfiltrated data from the Faculty of Management at the University of Warsaw, stating that data on students, instructors, and professors, as well as student projects and academic papers, was leaked. The disclosure status indicates data has been published.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Student personal data
  • Instructor and professor data
  • Student projects
  • Academic papers and theses

What the group claims

The Faculty of Management at the University of Warsaw is a leading institution in the field of business education, offering a wide range of undergraduate and graduate programs that combine theory with practical experience. However, it is not known for its high level of security and data storage reliability, resulting in the leak of data on students, instructors, and leading professors, as well as student projects and papers.

Sources

Source

Indexed 3 months 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 Interlock

Interlock is a recently emerged ransomware group that began operations in October 2024, primarily motivated by financial gain through extortion activities targeting organizations across multiple sectors. The group's country of origin and potential affiliations remain unclear given their recent emergence, with insufficient public documentation to determine whether they operate as an independent entity or under a Ransomware-as-a-Service model. Limited public information exists regarding their specific attack methodologies, initial access vectors, or encryption techniques, as major cybersecurity firms and law enforcement agencies have not yet published comprehensive technical analyses of their operations. Since beginning operations, Interlock has reportedly compromised approximately 100 victims, with their targeting primarily focused on organizations in English-speaking countries including the United States, Canada, United Kingdom, and Australia, as well as Italy, while demonstrating a preference for attacking education, manufacturing, healthcare, and public sector entities. The group remains active as of late 2024, though comprehensive threat intelligence profiles from established security research organizations have not yet been published due to the group's recent emergence in the threat landscape. The group has been linked to 114 public disclosures across our corpus. First observed on a leak site on October 13, 2024; most recent post July 10, 2026. The operation is currently active.

Timeline of this disclosure

  • April 15, 2026Uniwersytet Warszawski listed by Interlockon the group's public leak site

Other recent disclosures by Interlock

Interlock has been linked to 114 public victims on Darkfield. A sample of the most recent:

See the full Interlock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Education sector, which has 1,082 disclosures indexed across all operators we track. Geographically, Uniwersytet Warszawski is reported in Poland, a country with 21 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Interlock means Uniwersytet Warszawski 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, CERT Polska (Poland), as required for your jurisdiction.
  • Monitor for the data appearing on Interlock'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.