This record tracks a ransomware attack claimed by the
payoutsking group against
Grant Production Testing Services. 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.
32days
t1 · Published
t2 · Disclosed
Business Category
Healthcare / Medicine
Published
February 24, 2026
Disclosed / Notified
Mar 28, 2026
Attack Summary
[AI generated] Grant Production Testing Services is an oilfield services company specializing in well testing, flow measurement, and production testing solutions for the oil and gas industry. The company provides temporary and permanent testing equipment, data acquisition, and technical expertise to support operators during exploration and production activities. It operates primarily in Canada, serving clients across the upstream energy sector.
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 grantpts.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
136+
found in Traditional breaches
15+
found in Ransomware leaks
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
CSCGLOBAL.COM
clop · ransomware
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
MGM_Grand_Hotels RUTOR.7z
TheUnderground - Reborn · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
VITAMIX.COM
clop · ransomware
••• 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.