This record tracks a ransomware attack claimed by the
coinbasecartel group against
TBM Service Group. 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.
306days open
t1 · Published
t2 · Pending
Business Category
Services
Published
October 29, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
TBM Service Group is a full spectrum onsite managed services company offering a range from nightly maintenance and customer services in public tran...
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 tbmservicegroup.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
9
found in Traditional breaches
28
found in Ransomware leaks
Televerde
play · ransomware
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Denninger’s
medusa · ransomware
••• emails
UnderArmour_BF_.7z.001
Database World ROC · breach
••• emails
MGM_Grand_Hotels RUTOR.7z
TheUnderground - Reborn · breach
••• emails
Leak volumes are locked
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