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Unknown

Claimed by Braincipher · listed 2 months ago

1TB+
Data size
2m
Age
since listed · data leaked

Status timeline

  1. ListedMay 13, 2026
  2. Data leakeddate unknown

At a glance

Group
Braincipher
Status
Data leaked
Listed on leak site
May 13, 2026
Data size
1TB+

About the victim

AI dossier — public-source company profile

The victim company is unidentified; no name, domain, sector, or country information was provided in the leak post or associated metadata. No public site content was available to infer further details.

Attack summary

Severity: high — Over 1TB of data has been confirmed exfiltrated and published across 10 separate onion download links, indicating a large-scale data disclosure. Severity cannot reach 'critical' because the nature of the data (e.g. PII, medical, financial) is entirely unknown.

Braincipher claims to have exfiltrated over 1TB of data from the victim and has published multiple onion-hosted download links, indicating the data has been fully released rather than held for ransom negotiation.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Unspecified exfiltrated data (1TB+)

The group's post references roughly 10 proof files.

What the group claims

Victim listed on Braincipher ransomware leak site. More than 1TB of data claimed.

The leak post

captured from the group's site
We have more 1TB of data. If you think you are here by mistake, please contact us at [email protected] 
⏳ 11d 22h 42m 31s remaining 
Download: 3fg2gfwrdks46drwvejpgpak5klrflclsjjo35dxtqfk3poeez6oezad.onion If you think you are here by mistake, please contact us at [email protected] 
Download: emdnfl2fv32jhssxcbxlo6dzg2at4d7qbw2md6inz63qzdfgyln5cwyd.onion If you think you are here by mistake, please contact us at [email protected] 
Download: a4vbe7yp4kluped6khuhpr5nmzshiimx2jt5j22ozriiq6ngsm3fcpyd.onion If you think you are here by mistake, please contact us at [email protected] 
Download: x3nb7qcygpem2j5xzstyzdtgzofzkwkx4eko3ug4r73i6uhcgvyffjyd.onion If you think you are here by mistake, please contact us at [email protected] 
Download: 3frnhzcnlkjnw5q3tm6elzizinm2k3bmrtf2xwqjzpcxzeqwn2tv6wyd.onion If you think you are here by mistake, please contact us at [email protected] 
Download: 6ft2dfh26wm3w44orpjcgviutvfp25ez2iyh5ego5egvfmifrws7vvqd.onion If you think you are here by mistake, please contact us at [email protected] 
Download: zijgmuqjzb6dc7pofxhtaiz36qqyg35lhutybmzaz6whzgei2casjgid.onion If you thin…

Sources

Source

Indexed 2 months 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 Braincipher

Braincipher is a recently emerged ransomware group that was first observed in July 2024, operating with apparent financial motivations and targeting organizations primarily across North America and Europe. The group's origin and potential affiliations remain largely undocumented by major threat intelligence organizations, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing, likely operating as an independent entity rather than through established ransomware-as-a-service infrastructure. Their attack methodology and specific technical capabilities have not been extensively documented by CISA, FBI, or major security research firms, though their victim distribution across 44 confirmed targets spanning business services, manufacturing, technology, and healthcare sectors indicates a generalist approach to target selection rather than sector-specific expertise. No major high-profile campaigns or significant law enforcement actions have been publicly documented against this group by reputable sources, suggesting either a relatively low-impact operational scale or insufficient intelligence collection on their activities. As of current reporting, the group's operational status remains unclear due to limited public documentation from established threat intelligence sources. The group has been linked to 69 public disclosures across our corpus. First observed on a leak site on July 1, 2024; most recent post July 9, 2026. The operation is currently active.

Also tracked as: brain cipher.

Timeline of this disclosure

  • May 13, 2026Unknown listed by Braincipheron the group's public leak site
Data size
1TB+

Other recent disclosures by Braincipher

Braincipher has been linked to 69 public victims on Darkfield. A sample of the most recent:

See the full Braincipher dossier →

If your organisation is affected

A listing by Braincipher means Unknown appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Monitor for the data appearing on Braincipher's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.