Disclosure context

About nightspire

Nightspire is a ransomware group that first emerged in March 2025 and appears to be primarily financially motivated, having targeted over 215 victims in a relatively short operational timeframe. The group's origin and affiliations remain unclear due to limited public documentation from major cybersecurity organizations, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing. Based on available victim data, Nightspire appears to employ common ransomware attack vectors targeting organizations across multiple sectors, with a particular focus on manufacturing, technology, healthcare, and construction industries, while demonstrating a geographic preference for victims in the United States, India, Taiwan, France, and Hong Kong. The group's rapid victim acquisition rate since their March 2025 emergence suggests an active and potentially effective operational capability, though specific technical details about their attack methodology, encryption techniques, or extortion tactics have not been publicly documented by major threat intelligence firms. Given the recent emergence of this group and limited public reporting from established cybersecurity organizations like CISA, FBI, or Mandiant, Nightspire remains an active threat with insufficient public documentation to fully assess their operational sophistication or organizational structure. The group has been linked to 265 public disclosures across our corpus. First observed on a leak site on March 12, 2025; most recent post May 18, 2026. The operation is currently active.

Timeline of this disclosure

May 18, 2026Vantage Energy LLC listed by nightspireon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Energy sector, which has 374 disclosures indexed across all operators we track. Geographically, Vantage Energy LLC is reported in US, a country with 2,713 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

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Vantage Energy LLC

Claimed by nightspire · listed 2 days ago

Age

since listed · data leaked

Status timeline

Listed
May 18, 2026
Data leaked

At a glance

Group: nightspire
Status: Data leaked
Country: US
Sector: Energy
Listed on leak site: May 18, 2026

About the victim

AI dossier — public-source company profile

Vantage Energy LLC is a US-based energy company operating in the oil and gas sector. Based on its name and sector classification, it is likely involved in energy exploration, production, or related services. No additional detail is available from the public site or leak post.

Industry: Oil & Gas / Energy

Attack summary

Severity: medium — The disclosure status is 'data_published', suggesting data was exfiltrated and released, which elevates severity beyond a mere listing. However, no proof files, data inventory, or specifics about the nature or scale of the data are available, preventing a 'high' or 'critical' classification. Energy sector targeting adds operational concern.

The Nightspire ransomware group has listed Vantage Energy LLC as a victim with a disclosed status of 'data_published', indicating data exfiltration or publication is claimed. The leak post content is currently unavailable, so specific claims about encryption or data types cannot be confirmed.

medium

What the group claims

Data is not available now.

Sources

Victim sitewww.vantageenergy.com

Source

Indexed 2 days ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.