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Stalwart Development Group LLC

nightspire

This record tracks a ransomware attack claimed by the nightspire group against Stalwart Development Group LLC. 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.

105days open
t1 · Published t2 · Pending
Mar 04, 2026Not disclosed yet
Country
United States
Business Category
IT
Employees
51-100
Discovered
2026-03-07
Published
March 04, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
OmEQFMbnrnF7

Attack Summary

Data is not available now.

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.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for stalwartdg.com — indexed by HaveIBeenRansom.
0
found in Infostealer logs
0
found in Traditional breaches
1
found in Ransomware leaks
Colonial Surety Company
medusa · ransomware
••• emails
Leak volumes are locked
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Visit Website View Group: nightspire

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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.