MBM
thegentlemenThis record tracks a ransomware attack claimed by the thegentlemen group against MBM. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
https://mbm.edu.pl MBM is a Polish company specializing in professional training, compliance support, and implementation of mandatory procedures for both public institutions and private organizations across the country. They have over eight years of experience delivering vocational training, advisory services, audits, and ready‑to‑use documentation tailored to legal requirements, particularly in areas such as data protection and workplace obligations. Their services include courses on personal data protection and assistance in meeting the requirements of current data privacy laws, helping clients align with GDPR‑related duties and other legal obligations concerning handling and safeguarding personal information.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.