Kozminski University Listed by thegentlemen Ransomware Group

On June 15, 2026, Kozminski University appeared on the leak site of the ransomware group known as thegentlemen. The Polish business school, one of Europe’s most respected private institutions, is claimed to have had internal files exfiltrated during a ransomware attack. While the exact number of people affected remains unknown, any staff, students, alumni, or partners whose information was stored in those systems could now have their personal data circulating in criminal circles.

What's Publicly Reported from Reporting

Public reporting indicates that thegentlemen posted evidence of successful data exfiltration from Kozminski University’s networks. The university, located in Warsaw and known for its Triple Crown accreditation, specializes in management, finance, and law. Available details confirm that internal files were taken; no precise volume or specific record types have been publicly detailed beyond that description. The listing appeared on the group’s leak site, which is tracked by ransomware.live at the provided source URL.

The incident follows the group’s standard pattern of breaching an organization, encrypting systems where possible, and then threatening to publish stolen data unless a ransom is paid. In this case the university was listed after the deadline presumably passed.

Why This Matters for You and Your Family

When a university’s internal files are stolen, the information often includes names, addresses, dates of birth, phone numbers, email accounts, student IDs, employment records, and sometimes financial or tax details of staff, contractors, current students, and alumni. If you or anyone in your family has ever studied at, worked for, or done business with Kozminski University, your information may now be in the hands of criminals. That single exposure can be the starting point for identity theft, phishing campaigns, or targeted scams aimed at your household.

Credential leaks from educational institutions are especially dangerous because students and staff often reuse the same passwords across personal email, banking, and social media. A breach that begins at a university can quickly spread into every part of your digital life.

The Doxxing and Identity-Chain Risk

Once criminals obtain even a few pieces of information about you, they can link it to your online handles, gaming usernames, family members’ accounts, and home address. This creates an identity chain that makes doxxing and harassment far easier. Public reporting shows that ransomware groups increasingly sell or publish these combined datasets, allowing other attackers to target you or your children months or years later. Gaming accounts belonging to teenagers are frequent secondary targets because they often share the same email address or phone number used for school records.

The Gentlemen’s Public Track Record

Public reporting attributes thegentlemen ransomware group with emerging in late 2024. The group has claimed responsibility for attacks on a variety of organizations across Europe and North America, including healthcare providers, manufacturing firms, and educational institutions. Their typical playbook involves initial access through phishing or exploited remote desktop services, followed by extensive internal reconnaissance, data exfiltration, encryption of systems, and then dual extortion: demanding payment both to restore systems and to prevent publication of stolen files. They maintain a leak site where they post samples and eventually larger archives if victims do not pay.

What to do

• Run a DoxxScan to map every link between your emails, phone numbers, handles, and real-world identity so you can see exactly what the breach may have exposed.
• Rotate any password you ever used at Kozminski University or its systems and enable 2FA with an authenticator app everywhere that password was reused.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next time your information appears it is caught within hours rather than months.
• Cover the entire household with DoxxScan family protection, which includes children’s gaming accounts that frequently chain back to the same emails and addresses used for school records.
• Let DoxxScan’s remediation specialists handle takedown requests and broker removals for you instead of attempting manual cleanup across dozens of sites.

The reality is that one breach at an institution you dealt with years ago can still affect your family today. Taking deliberate steps now limits how far criminals can travel down the identity chain that begins with this incident. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, and hands-on remediation by specialists who also protect gaming accounts for both adults and children. Start your DoxxScan trial and close the gaps before the next attacker does.