Sincerehq.com SINCERE Corporation
bd_4ead6d4ce8c05479 · schema v1 · pii pii-v1
Full breach record for Sincerehq.com SINCERE Corporation →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Thegentlemen on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
Sincerehq.com SINCERE Corporation is a Japanese environmental services company operating under the philosophy of "Symbiosis with Nature," offering "one-stop" solutions in waste management and building maintenance across four main segments: Resource Cycling, Recycling Business, Environmental Improvement and Building Maintenance, and Environmental Consulting. Established in 1969, the company contributes to Japan's circular economy with nationwide operations, including major facilities in Shinagawa and Yokohama.
Source provenance
- Source URL
- https://www.ransomware.live/
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Jan 20, 2026
- Raw hash
- de3b66f9fd10e86475b00a38ff7f86b5568d78f2f124f8372aabae3ed623b329
Reporting entity
- Name
- thegentlemen
Victim entity
- Name
- Sincerehq.com SINCERE Corporationnorm: sincerehqcom sincere
- Domain
- sincerehq.com
- Industry
- Energy & Utilities
What this source establishes
- Source ceiling
- A leak-site claim can't tell us: discovery date · materiality · notification · affected count · confirmed data types · compliance clock. These stay blank until a regulatory filing or victim disclosure lands.
- Attack vector
- Ransomware· thegentlemen
- Threat actor
- ThegentlemenExternalFinancial
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.