This record tracks a ransomware attack claimed by the
sinobi group against
Ganther Construction. 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.
26days
t1 · Published
t2 · Disclosed
Business Category
Telecommunications
Published
August 09, 2025
Disclosed / Notified
Sep 05, 2025
Attack Summary
Established in 1979, GCI is headquartered in Anchorage, Alaska. They are a telecommunications provider with services including internet, mobile, TV, and more. As Alaska's largest telecommunications provider, they're committed to bridging the digital divide in the most remote communities in the world by investing in connectivity solutions that empower all Alaskans to live more connected lives.
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 ganther.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
224+
found in Traditional breaches
30+
found in Ransomware leaks
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pureincubation-com.7z.001
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••• emails
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••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
FHR Electric
medusa · ransomware
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
+ 17 more leak sources locked
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Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.