SYSTHERM INFO Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
SYSTHERM INFO was listed by thegentlemen ransomware group on April 19, 2026, after internal files were exfiltrated in a ransomware attack. An undisclosed number of people may have been affected; check the listing and monitor your accounts for any signs of compromise.
Inside the incident
The only confirmed information is the April 19, 2026 listing itself and the statement that internal files were allegedly exfiltrated. No volume of data, list of file types, or date of the initial access has been published. The organisation has not issued a separate statement confirming or denying the claim.
Who is thegentlemen?
Thegentlemen is a ransomware group that publishes victim names on a leak site when negotiations fail or to apply pressure. Its listings are presented as claims of access rather than independently verified events. Public reporting on the group has documented similar listings against other organisations, typically accompanied by assertions that files were removed prior to encryption.
Who is SYSTHERM INFO?
SYSTHERM INFO Sp. z o.o. is a Polish company based in Poznań and founded in 1996. It develops and supplies geographic information systems, notably the GEO-INFO land information platform used in surveying and geodesy work, and it distributes software-protection products. The firm also holds ISO quality certifications. Organisations of this type routinely process records that support public land registries and professional licensing.
What data was at risk
The listing refers only to “internal files.” No inventory of specific data categories has been released. Organisations that maintain land-information and GIS systems commonly hold records relating to property, surveying projects, client contracts and internal operations, but the exact contents of the exfiltrated material are unconfirmed.
The real-world impact
Individuals named in land or surveying records could face secondary misuse of personal or property details if the files are published. For the company, the incident adds operational disruption from any ransomware deployment and potential loss of client confidence in systems that underpin official Polish geospatial data. No confirmed instances of follow-on harm have been reported to date.
Were you affected?
Because the number of individuals involved is unknown, anyone who has interacted with Polish surveying, geodesy or land-registry processes may wish to monitor their personal information. Practical first steps include reviewing bank and credit statements for unusual activity and placing fraud alerts with relevant institutions if records containing identification numbers appear to have been exposed.
- Request a copy of your personal data from any organisation that holds your land or surveying records.
- Enable monitoring on financial accounts and official identity documents.
- Run a free exposure scan of your email address against known breach data sets to check for prior appearances.
AICompiled with AI assistance from public sources and published under our editorial standards.
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Publicly posted by thegentlemen — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.