This record tracks a ransomware attack claimed by the
qilin group against
TIS. 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
Disclosed / Notified
Jan 31, 2026
Attack Summary
TIS is listed as a victim of the qilin ransomware operation. It operates in the IT sector and is estimated to employ around 101-1000 people. The affected entity is based in United Kingdom. The incident was first observed on April 10, 2026. This record is maintained by Breach House as part of its ongoing monitoring of public ransomware leak sites.
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 tis.co.uk
— indexed by HaveIBeenRansom.
629
found in Infostealer logs
186+
found in Traditional breaches
63+
found in Ransomware leaks
Access Intelligence
play · ransomware
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
contacts_95.csv
Database World ROC · 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.