Ransomware victim disclosure

Bresme Madrid S.L.

Claimed by nightspire · listed 7 days ago

Age

since listed · data leaked

Status timeline

Listed
May 24, 2026
Data leaked

At a glance

Group: nightspire
Status: Data leaked
Country: ES
Sector: Business Services
Listed on leak site: May 24, 2026

About the victim

AI dossier — public-source company profile

Bresme Madrid S.L. is a business services company based in Spain, operating under the domain www.bresme.com.

Industry: Business Services

Attack summary

Severity: low — No proof files, data samples, or operational impact details are available. The leak post contains no substantive content describing the attack or data at stake. Without concrete evidence of exfiltration or encryption, classification defaults to low.

The nightspire group claims to have conducted an attack on Bresme Madrid S.L. and published data; however, the specific details of what was exfiltrated or encrypted are not available in the leak post provided.

low

What the group claims

Data is not available now.

Sources

Victim sitewww.bresme.com/en

Source

Indexed 7 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.

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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 275 public disclosures across our corpus. First observed on a leak site on March 12, 2025; most recent post May 26, 2026. The operation is currently active.

Timeline of this disclosure

May 24, 2026Bresme Madrid S.L. listed by nightspireon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,642 disclosures indexed across all operators we track. Geographically, Bresme Madrid S.L. is reported in ES, a country with 116 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.