70,981 customers affected by a claimed leak at Trescal
On 2 January 2026, a dark-web forum member claimed to be selling an internal Trescal customer database of roughly 70,981 unique records, exposing names, business emails, phone and fax numbers, job titles, company names and French SIRET numbers.
- Victim
- Trescal
- records
- 71.0K
On 2 January 2026, Trescal — a global industrial-metrology group providing calibration, maintenance and measurement services to manufacturers — was named in a dark-web forum listing in which a member claimed to be selling an internal company database.
According to the listing, the data consists of internal files holding roughly 70,981 unique customer and contact records. The post advertised the dataset for sale rather than publishing it openly, and the claim has not been independently confirmed by Trescal.
The exposed fields described in the listing include:
- Full names
- Business email addresses
- Phone and fax numbers
- Job titles and roles
- Company names
- French SIRET (company registration) numbers
- Country
The records appear to be B2B contact and customer data rather than consumer or payment information. As of disclosure the breach remained a claimed sale on a criminal forum, with no confirmed attack vector and no public statement or remediation detail from Trescal, so the status is best treated as unknown.
Sources
- fuitesinfos.frhttps://fuitesinfos.fr/article/2026-01-02-trescal
- x.comhttps://x.com/MonThreat/status/1986038273727189093
- upguard.comhttps://www.upguard.com/security-report/trescal-group