This record tracks a ransomware attack claimed by the
akira group against
ATC SA. 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.
1038days open
t1 · Published
t2 · Pending
Business Category
Communication / Marketing
Indexed by Breach House
November 17, 2023
Leak Status
pending
checked 2026-09-19
Disclosed / Notified
Not disclosed yet
Attack Summary
ATC is an international software company. For more than 25 years,the company provides innovative solutions for the Central Government, Media, Banking, Distribution, Manufacturing and Services. Their corporate data will be available soon.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector, last checked 2026-09-19. Verdict evidence: [akira/terminal] ATC SA
Showing the latest capture only
Unlock the daily capture history — up to 45 days of evidence.
Dark Web Exposure
Cross-referenced against HaveIBeenRansom's dark-web index of ransomware leaks, breaches & infostealer logs.
0
found in Infostealer logs
0
found in Traditional breaches
0
found in Ransomware leaks
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••• emails
Full exposure is locked
See every breached email, the internal-vs-external split and each leak source behind this victim.
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