All ransomware incidents
Ransomware group thegentlemen hits Sielke
Sielke — a not found target operating in DE has been listed by the thegentlemen ransomware group on 2026-11-11. The information below reflects what the threat actor has publicly claimed on their leak site; the details have not been independently verified.
Incident Report
| Target Organization | Sielke |
|---|---|
| Threat Group | thegentlemen |
| Summary | Sielke in Germany, was listed by the thegentlemen ransomware group on its leak site on 2026-11-12. |
| Date of Breach | 2026-11-11 |
| Discovery Date | 2026-11-12 |
| Region | DE |
| Target Domain | sielke.com |
| Business Sector | Not Found |
| Severity | MEDIUM |
Claim by thegentlemen
sielke.com Sielke is a German family company founded in 2002 in Hamburg, operating two brands: Sielke Papier for paper, packaging and office supplies, and Sielke Home for stylish home and living products. Headquartered at Dynamowerk 1 in Hamburg-Harburg, it has been serving businesses and consumers for 23 years. Sielke Papier provides a full range from printing and kraft paper to custom packaging solutions with sustainable FSC-certified options. Sielke Home offers decoration, kitchen, bath, wellness and gift products under the motto You Are Home. The company is estimated at 2 to 10 million euro in revenue with a small team of 20 to 50 employees.
Posted by the thegentlemen threat actor on its public leak site. This is the group's own statement and has not been independently verified by HackerFeeds.
Sources
Disclaimer
HackerFeeds does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.