SYSTHERM INFO Listed by thegentlemen Ransomware Group

On March 26, 2026, Polish IT firm Systherm Info appeared on the leak site of the ransomware group known as thegentlemen, with the attackers claiming to have exfiltrated internal company files following a ransomware incident.

Reported Details of the Breach

Public reporting indicates that Systherm Info Sp. z o.o., headquartered in Poznan and founded in 1996, was listed by the group. The company develops and maintains GEO-INFO, a widely used land information system in Polish geodesy and surveying, and also distributes software protection solutions. Available reporting describes the exposed material as internal files taken during a ransomware attack. The exact number of individuals whose personal data may have been inside those files remains unknown. No specific deadline for payment or further data publication has been publicly detailed in the initial listing.

Why This Matters for You and Your Family

When a company that handles geographic, land, and surveying records suffers a breach, the consequences often reach ordinary people. If your property deeds, land surveys, utility mappings, or personal address details are stored in systems powered by GEO-INFO or similar platforms, fragments of your information could now sit in an attacker’s archive. Internal files frequently contain spreadsheets with customer names, contact details, identification numbers, or contract information. Once that data leaves the company’s control, it can be sold, traded, or used to build profiles on you and your family. Even if you never directly hired Systherm Info, government agencies, local councils, or contractors that rely on its software may have shared your information with the firm.

The Doxxing and Identity-Chain Risks

Ransomware leaks rarely stop at one company’s files. Attackers often search the stolen data for email addresses, usernames, phone numbers, or passwords that appear in other contexts. These fragments become the starting point for doxxing chains that link your professional identity to personal accounts, social media handles, and even your children’s online profiles. Credential leaks like this one frequently cascade into gaming account takeovers, where attackers use reused passwords or recovery email addresses to seize control of Steam, Roblox, or other platforms popular with kids. The result can be harassment, identity theft, or demands for payment that begin with seemingly harmless pieces of information taken from a Polish IT provider.

thegentlemen’s Known Track Record

Public reporting attributes thegentlemen with emerging in recent years as a ransomware operation that publishes victim data on dedicated leak sites when ransoms go unpaid. The group’s typical playbook involves initial access through common vectors such as phishing or exploited remote desktop services, followed by exfiltration of sensitive files and deployment of ransomware. They then pressure victims with threats of data publication, a pattern seen across multiple prior incidents listed on ransomware tracking platforms. Their targets have included companies of varying sizes, often in Europe, though exact prior victim lists and technical details remain based on what is published on leak sites and industry trackers.

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 back to this incident.
• Rotate any password you used at Systherm Info or related Polish government or surveying portals anywhere it has been reused, and switch on 2FA using an authenticator app rather than SMS.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next time your information surfaces you learn within hours instead of months.
• Cover the household with DoxxScan family protection that includes dependents and your children’s gaming accounts, which are often the weakest link when credential leaks cascade into takeovers.
• Let remediation specialists handle the repetitive work of sending takedown notices to data brokers and monitoring platforms that resell information tied to your family.

The pace of ransomware leaks shows no sign of slowing, which means ordinary families must treat every new incident as another tile added to a mosaic of exposure that can be assembled by determined attackers. Starting with clear visibility into your personal data footprint is the most practical defense. DoxxScan by GalaxyWarden delivers continuous monitoring across more than 13.1 billion+ breach records and over 100 platforms, AI-powered identity-chain mapping that connects scattered handles to real identities, and hands-on remediation by specialists who manage takedowns for you. Its household coverage also protects children’s gaming accounts that frequently become targets once a credential leak begins to spread.