MBM Listed by thegentlemen Ransomware Group

On January 11, 2026, Polish training and compliance firm MBM appeared on the leak site of the ransomware group known as thegentlemen, with the attackers claiming to have exfiltrated internal files from the company’s network.

Reported Details of the Incident

Public reporting indicates that MBM, which provides professional training, data protection courses, audits, and compliance documentation to both public institutions and private organizations in Poland, was listed as a victim. The company has more than eight years of experience helping clients meet legal obligations around workplace rules and personal data protection. Available reporting describes the data involved as internal files taken during a ransomware attack, though the exact volume and full list of contents have not been independently verified. No confirmed total of affected individuals has been released, and it remains unclear whether customer, employee, or partner records were included in the exfiltrated material.

MBM.edu.pl continues to operate its public website, but the listing on the ransomware leak site signals that negotiations between the company and the attackers either failed or never took place.

Why This Matters for You and Your Family

When a firm that teaches data protection and handles compliance documentation suffers a breach, the irony is clear: the very organizations trusted to help others safeguard information have now exposed their own. If you or your family have ever taken a workplace compliance course, submitted personal details for mandatory training, or worked with a Polish public institution that used MBM’s services, your information could be among the internal files now in attackers’ hands. Even basic details such as names, email addresses, phone numbers, or employment records can be enough to fuel further fraud or identity theft. For ordinary people, this incident shows how data leaks reach beyond big corporations into the training providers that serve everyday employers and government bodies.

The Doxxing and Identity-Chain Risks

Stolen internal files often contain more than isolated records. They can include spreadsheets that link employee names to personal email accounts, phone numbers, or even notes about family members. Attackers routinely combine these fragments with data from earlier breaches to build detailed profiles. A single leaked training roster can become the starting point for doxxing chains that expose home addresses, children’s names, or social media handles. Credential leaks of this nature frequently cascade into account takeovers, especially for gaming platforms where children often reuse passwords or email addresses tied to family accounts. Once one service falls, the chain can spread rapidly across dozens of online profiles.

The Gentlemen Ransomware Group’s Track Record

Public reporting attributes the attack to thegentlemen, a ransomware operation that emerged in recent years and has targeted organizations across multiple countries. The group’s typical playbook involves gaining initial access, exfiltrating sensitive files before deploying ransomware, and then publishing samples on a dedicated leak site when victims refuse to pay. Notable prior victims have included companies in various sectors, though specific details remain limited in open sources. Thegentlemen usually set payment deadlines and threaten full data release, a pattern consistent with the current listing of MBM.

What to do

• Run a DoxxScan to map every link between your emails, phone numbers, usernames, and real-world identity so hidden connections become visible.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next leak exposing you or your family is caught in hours rather than months.
• Rotate any password you used on mbm.edu.pl or related training portals anywhere else it is reused, and switch to 2FA through an authenticator app instead of SMS.
• Cover the entire household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often chain back to the same addresses or emails leaked in incidents like this.
• Let remediation specialists handle takedown requests for any exposed personal information found on data broker sites or underground forums.

The incident underscores that even specialized compliance providers can become targets, leaving ordinary families exposed to long-term identity risks. Start your DoxxScan trial today and combine it with basic hygiene such as unique passwords and prompt breach response. 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—practical protection when credential leaks like the MBM breach cascade into account takeovers and doxxing chains.