Sando Tech Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

People whose information appears in internal records held by industrial companies can face downstream risks when those files are taken in a ransomware operation. In this case, the exposure involves Sando Tech, a Japanese machinery manufacturer, after thegentlemen ransomware group listed the company on its leak site. The incident was reported on February 26, 2026. Public records show only that internal files were allegedly exfiltrated during a ransomware attack; the number of people affected, the volume of data, and the precise method of intrusion remain undisclosed.

What happened

The listing states that files were removed from Sando Tech systems during a ransomware incident. No further technical details, such as the initial access vector or the date of the intrusion, have been made public. The scale of the data removal is also not specified.

The group behind it: thegentlemen

Thegentlemen is a ransomware operator that maintains a leak site to publish data taken from targeted organisations. The group claims responsibility for the Sando Tech incident through that listing. Public reporting on the actor shows it typically uses encryption alongside data theft to pressure victims, though specific tactics used against this company have not been confirmed.

About Sando Tech

Sando Tech, also known as SANDO TECH, Inc., develops, designs, manufactures, and sells industrial machinery, including testing equipment, along with repair services and replacement parts. Its clients are primarily other businesses that require specialised machinery. Organisations in this sector routinely store technical specifications, customer contracts, supplier details, and internal operational records.

The information in question

The only confirmed category is internal files taken during the ransomware operation. The exact contents of those files have not been disclosed. Companies of this type commonly hold engineering documents, client and supplier information, financial records, and employee data, but it is not known whether any of these categories were among the exfiltrated material.

What's at stake

Exposed internal files can reveal proprietary designs or business relationships that competitors or other actors might exploit. For individuals named in those records, the main concerns are identity misuse or targeted follow-on contact if contact details are present. The organisation itself faces potential loss of competitive information and the cost of remediation.

If your data was in this claimed breach

Because the exact data types remain unconfirmed, anyone who has done business with Sando Tech or worked there should treat the possibility of exposure seriously. Practical first steps include:

• Monitor bank and credit accounts for unusual activity.
• Enable multi-factor authentication on any accounts that may reuse passwords found in the files.
• Request a copy of your data from the company if you are a client or former employee.
• Run a free exposure scan of your email address against known breach datasets to see whether your information has appeared elsewhere.

AICompiled with AI assistance from public sources and published under our editorial standards.