This record tracks a ransomware attack claimed by the
direwolf group against
🇪🇬
Tepco-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.
277days open
t1 · Published
t2 · Pending
Business Category
Manufacturing / Engineering
Indexed by Breach House
October 15, 2026
Leak Status
leaked
checked 2026-10-15
Disclosed / Notified
Not disclosed yet
Attack Summary
tepco-group.com operates within the Japanese manufacturing and engineering sector, providing enterprise technology solutions and industrial services to support operational and production workflows. The entity is cataloged in this threat-intelligence index under the listing type ransomware victim, with an associated threat actor identified as Direwolf. This classification reflects intelligence linking the organization to malicious activity associated with Direwolf without disclosing unverified incident details such as data stolen, ransom demands, or confirmed breach specifics. The entry serves as a neutral reference point for threat researchers and security professionals monitoring industrial-sector exposure to ransomware campaigns. It was listed as a ransomware victim associated with direwolf.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector, last checked 2026-10-15. Verdict evidence: [M1] Published: 2026-01-13
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Dark Web Exposure
Findings for tepco-group.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
34
found in Traditional breaches
4
found in Ransomware leaks
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
linkedIN_2.7z.001
Database World ROC · breach
••• emails
Swvl_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
The Sinbad Club
medusa · ransomware
••• emails
@TXTLOG_ALIEN — @TXTLOG_LINK - 491.txt
Database World ROC · breach
••• emails
Database World ROC · breach
••• emails
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