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Horizon Energy Partners

0apt

This record tracks a ransomware attack claimed by the 0apt group against Horizon Energy Partners. 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.

212days open
t1 · Published t2 · Pending
Jan 31, 2026Not disclosed yet
Country
United States
Business Category
Energy
Employees
51-100
Discovered
2026-01-31
Published
January 31, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
pmn7adDwk96x

Attack Summary

Horizon Energy Partners is an energy-sector company in the United States, identified in business records as a privately held oil and gas exploration and production firm with offices in Denver, Colorado and Houston, Texas. Public company profiles also describe related Horizon Energy Partners entities as operating in oil and gas, placing the name within the broader US energy industry. In cataloging and threat-intelligence contexts, it is treated as an energy-sector target rather than as a consumer-facing brand. It was listed as a ransomware victim associated with 0apt.

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

Cross-referenced against HaveIBeenRansom's dark-web index of ransomware leaks, breaches & infostealer logs.
0
found in Infostealer logs
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found in Traditional breaches
0
found in Ransomware leaks
Emails exposed
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External
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Distinct leaks
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••• emails
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••• emails
Full exposure is locked
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View Group: 0apt

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