This record tracks a ransomware attack claimed by the
weyhro group against
Chemtron RiverBend. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
-61days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Published
August 10, 2025
Disclosed / Notified
Jun 10, 2025
Attack Summary
[AI generated] 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.
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for crbwater.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
6
found in Traditional breaches
12
found in Ransomware leaks
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••• emails
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••• emails
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shinyhunters · breach
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••• emails
American Golf
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••• emails
Leak volumes are locked
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Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.