This record tracks a ransomware attack claimed by the
sinobi group against
Graymatter. 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.
-70days
t1 · Published
t2 · Disclosed
Business Category
Retail / E-commerce
Published
February 19, 2026
Disclosed / Notified
Dec 12, 2025
Attack Summary
GrayMatter (graymatter.co.in) is a Bangalore-based IT company founded in 2006, specializing in data analytics, AI, and Business Intelligence (BI) with a strong focus on the airport, retail, and manufacturing sectors. Their flagship products, including Skateboard and StoreSense, deliver specialized, AI-driven insights for improved passenger experience, retail revenue, and parking management.
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 graymatter.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
42+
found in Traditional breaches
0+
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Massachusetts 1,53,000+ Email.csv
tni.mil.id · breach
••• emails
UnderArmour_BF_.7z.001
Database World ROC · breach
••• emails
usa.gov - USA Business & Investor Database.rar
Database World ROC · breach
••• emails
contacts_6.csv
Database World ROC · breach
••• emails
29 Leaks
ddosecret · breach
••• emails
+ 6 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 9 sources.
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.