This record tracks a ransomware attack claimed by the
payoutsking group against
TESSCO. 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
Telecommunications
Disclosed / Notified
Mar 13, 2026
Attack Summary
[AI generated] TESSCO Technologies is a United States-based company operating in the wireless technology distribution industry. Founded in 1982 and headquartered in Hunt Valley, Maryland, TESSCO serves as a value-added distributor and solutions provider for wireless networking products, infrastructure equipment, and mobile devices. The company supplies carriers, contractors, system integrators, and government agencies with products from leading manufacturers across the telecommunications 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 tessco.com
— indexed by HaveIBeenRansom.
143
found in Infostealer logs
2,603+
found in Traditional breaches
397+
found in Ransomware leaks
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Database World ROC · breach
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CSCGLOBAL.COM
clop · ransomware
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play · ransomware
••• emails
ATI Systems
play · 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.