Chemtron RiverBend
bd_f64ea9da5bc7c46a · schema v1 · pii pii-v1
Full breach record for Chemtron RiverBend →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Weyhro 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
Chemtron RiverBend is a leading hazardous waste and non-hazardous waste management service provider. They specialize in providing effective and safe disposal and recycling of waste for a wide range of industries. They deliver waste management solutions with safety procedures and regulations, ensuring environmental protection and compliance.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Aug 10, 2025
Claim posted
—
No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
weyhro
According to ransomware.live, Weyhro is a data-extortion group (relying on data theft and leak threats without file encryption) that launched a Tor leak site in March 2025, focusing on manufacturing, financial services, and real estate sectors with victims in the US, Italy, and Canada.