This record tracks a ransomware attack claimed by the
thegentlemen group against
Lider Aviacao. 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
Business Category
Transportation / Travel / Logistics
Published
September 05, 2026
Disclosed / Notified
Not disclosed yet
Attack Summary
lideraviacao.com.br zoominfo.com/c/líder-aviação/372493800 Líder Aviação is Latin America's largest business aviation company, founded in 1958 in Belo Horizonte, Brazil, as an air taxi with a single Cessna 170. Today: ~R$1.2B revenue, 1,300+ staff, 50+ aircraft, 22 own bases; 42.5% owned by US Bristow Group, run by the founder's third generation (President: Junia Hermont). A one-stop shop: charters (first booking app in Brazil), the region's largest FBO network, aircraft sales (exclusive HondaJet dealer, 1,000+ sold), a top MRO (authorized for Bell, HondaJet, Gulfstream) and offshore helicopter ops for Petrobras since 1973 (1M+ flight hours). Key edge: safety — the only Brazilian company with IS-BAO Stage 3, plus Argus Platinum and 5× Petrobras Peotram wins. First SAF flight in Brazilian business aviation (2024), now expanding into agribusiness and electric aviation. Bottom line: a 67-year-old family giant controlling South American business aviation end-to-end.
Leak Screenshots
SAMPLE
This is what a leak gallery looks like. Sign in to see the
screenshots our collector has actually taken of this listing.
Dark Web Exposure
Findings for lideraviacao.com.br
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
117+
found in Traditional breaches
3+
found in Ransomware leaks
Full Clouds Cit0day_2.7z.001
DBs w MTDT · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
EstanteVirtual (2).7z
DBs w MTDT · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
20M-Brazil-hurb.com-Largest-Travel-Agency-Customers-csv-2019.zip
DBs w MTDT · breach
••• emails
Leaks Aggregator @sqan7 · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
Database world roc · breach
••• emails
+ 15 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 18 sources.
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
its publication, we do not access any private system, and we do not alter
anything we record. Nothing is offered for download here, and detailed
content is not published on this page or anywhere else on the public site:
access to it is restricted to vetted customers under contract, for
incident response, due diligence and cyber-resilience work.
Breach.house is not affiliated with, and does not act on behalf of, the
operators who publish this material. If you represent an organisation or
individual named here and want a record reviewed or removed, contact us
and we will act on it.