This record tracks a ransomware attack claimed by the
Aoqin group against
Sistel. 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.
0days open
t1 · Published
t2 · Pending
Indexed by Breach House
November 05, 2026
Disclosed / Notified
Not disclosed yet
Attack Summary
Sistel is an entity within the IT sector located in Brazil. It is documented as a ransomware victim associated with the threat actor Aoqin. The listing type identifies Sistel within the threat-intelligence index as a ransomware victim, reflecting its involvement in a cyber incident tied to Aoqin's activity. This entry provides structured catalog information for threat researchers and security analysts monitoring entity relationships, sector exposure, and actor associations. The description remains factual and neutral, focusing solely on the indexed classification without elaborating on unverified incident details.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector. Verdict evidence: listed on the leak site; no evidence of publication yet
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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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Full exposure is locked
See every breached email, the internal-vs-external split and each leak source behind this victim.
Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house only records what the operators themselves publish in the
open. We take screenshots of their public pages and keep the proof
material they post there, so that a listing can be verified and its status
tracked over time. We do not purchase data, we do not solicit or encourage
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and we will act on it.
