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high severity April 15, 2026 · 4 min read Unverified claim — what this is

Uniwersytet Warszawski Listed by interlock Ransomware Group

If you are a customer of Uniwersytet Warszawski, here’s what is being claimed, and what it would mean for you.

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.

— from Interlock’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.
Uniwersytet Warszawski Listed by interlock Ransomware Group

On February 9, 2026, the interlock ransomware group listed the Faculty of Management at the University of Warsaw on its leak site, claiming that internal files had been exfiltrated during a ransomware attack. The breach affects an unknown number of students, instructors, and professors whose personal information, along with student projects and academic papers, appears to have been stolen.

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Reported Details from Reporting

Public reporting indicates the incident targeted the Faculty of Management, a prominent Polish business school. Available details show that attackers gained access to internal systems and removed files containing data on students, teaching staff, and senior academics. The exfiltrated material also includes student coursework and research papers. No precise victim count has been released, and the university has not yet issued a detailed public statement on the scope of the exposure.

February 9, 2026 marks the date the group added the university to its public leak page. The data types involved — names, contact details, academic records, and project files — match the typical payload interlock extracts before threatening publication.

Why This Matters for You and Your Family

If you or your children studied or worked at the University of Warsaw Faculty of Management, your personal information may now sit on a criminal leak site. Even if you are not directly connected, the breach illustrates how everyday academic and professional records can suddenly become public. Once names, emails, phone numbers, or addresses leave institutional control, they can be reused to target you years later through phishing, identity theft, or harassment.

Your family’s exposure does not end with one leak. A single set of credentials or contact details can link to other accounts you use for banking, shopping, or children’s online activities. When that happens, the risk shifts from “my old school records are out there” to “someone is trying to break into my email or my child’s gaming account.”

The Doxxing and Identity-Chain Risks

Ransomware leaks rarely stop at the initial data set. Criminals and opportunistic attackers combine the newly exposed records with information already circulating on forums and breach repositories. This creates identity chains that map an email address to a username, a phone number to a home address, and a parent’s account to a child’s gaming handle. The result is accelerated doxxing that can lead to targeted harassment, SIM-swapping attempts, or account takeovers across multiple platforms.

Credential leaks like this one frequently cascade into gaming account compromises. Children’s usernames and passwords reused from school systems become entry points for attackers who then demand ransom or publicly shame the family. The speed at which these chains form leaves most people unaware until damage is already done.

Interlock Ransomware Group’s Track Record

Public reporting attributes the attack to the interlock ransomware group. The group emerged in late 2024 and has since listed dozens of organizations across education, healthcare, and local government sectors. Notable prior victims include mid-sized universities and municipal agencies whose internal documents were published after ransom demands went unpaid.

Interlock’s typical playbook begins with initial access through phishing or exploited remote desktop services, followed by rapid exfiltration of sensitive files. The group then encrypts systems and posts samples on its leak site, giving victims a short deadline before full publication. Extortion focuses on reputational harm to the institution and the threat of releasing personal data of students and employees.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, usernames, and real-world identity so you can see exactly what chains exist today.
  • Rotate any password you ever used at the University of Warsaw anywhere it has been reused, and switch on 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure is caught and addressed within hours instead of months.
  • Cover the household with DoxxScan family protection that extends to your children’s gaming accounts and any linked profiles that could be exploited through the same leaked details.
  • Let remediation specialists handle the time-consuming work of sending takedown notices to data brokers and monitoring platforms where your information has surfaced.

The University of Warsaw breach is a reminder that academic institutions remain attractive targets and that the data they lose can affect your family for years. Taking concrete steps now limits how far attackers can travel down the identity chain. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to regain control before the next leak appears.

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Sample resultyou@email.comIllustrative — not a real person

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value redacted in this sampleage, relatives, address historySpokeo
value redacted in this samplephone, household, property recordsBeenVerified
value redacted in this sample582 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach
unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

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Report details & sourcing

Severity High
Disclosed April 15, 2026
Last reviewed August 8, 2026
Affected Unconfirmed
Unverified claim — what this report is
This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.
Editorial & sourcing policy
GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.
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