This record tracks a ransomware attack claimed by the
insomnia group against
The Syverson Group. 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.
-4days
t1 · Published
t2 · Disclosed
Business Category
Healthcare / Pharma
Published
January 08, 2026
Disclosed / Notified
Jan 04, 2026
Attack Summary
TSG is a retained executive search firm specializing in medical device and life sciences recruiting. They deliver rapid, client and candidate-focused talent acquisition—including diagnostics, clinical research and leadership placement.
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 thesyversongroup.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
98+
found in Traditional breaches
19+
found in Ransomware leaks
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Autobell Car Wash, Inc
medusa · ransomware
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
AT&T 5 Million Leaked Database.7z
Database World ROC · breach
••• emails
Arandell Corp
medusa · ransomware
••• emails
+ 6 more leak sources locked
Leak volumes are 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.