Was senseis.xmp.net hit by ransomware?

senseis.xmp.net was listed by the Babuk ransomware operation, and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Babuk ransomware group?

Babuk is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the senseis.xmp.net breach?

Babuk published data attributed to senseis.xmp.net. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Sensei's Library

listed as senseis.xmp.net · Claimed by Babuk · listed 1 year ago

17m

Age

since listed · data leaked

Status timeline

ListedJan 27, 2025
Data leakeddate unknown

At a glance

Group: Babuk
Status: Data leaked
Listed on leak site: Jan 27, 2025

About the victim

AI dossier — public-source company profile

Sensei's Library is a collaborative wiki-based website dedicated to the game of Go (also known as Igo, Weiqi, or Baduk). It functions as a repository, discussion medium, and community resource with over 26,600 pages of Go-related information, problems, reviews, and player profiles. The site allows anyone to contribute without registration.

Industry: Online Community & Reference — Games/Go

Attack summary

Severity: low — The leak post is a bare listing with no proof files, no data inventory disclosed, no ransom demand, and no operational impact claimed. The victim is a non-commercial community wiki with no obvious sensitive data holdings.

Babuk claims to have attacked senseis.xmp.net. The group's leak post contains only the domain name with no details on data exfiltration, encryption, or proof of compromise.

low

What the group claims

senseis.xmp.net

Sources

Victim sitesenseis.xmp.net

Source

Indexed 1 year 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 Babuk

Babuk is a ransomware group that emerged in October 2020, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors. The group is believed to have originated from Russian-speaking cybercriminal networks and operates independently rather than as a traditional Ransomware-as-a-Service model, though they have shown willingness to collaborate with affiliates. Babuk typically gains initial access through exploitation of unpatched vulnerabilities in public-facing applications and weak remote desktop protocol credentials, employs double extortion tactics by exfiltrating sensitive data before deploying their custom encryption malware, and threatens to publish stolen information on their dedicated leak site if ransom demands are not met. The group gained significant notoriety in May 2021 when they successfully breached the Washington D.C. Metropolitan Police Department, stealing and threatening to release sensitive law enforcement data including information on criminal investigations and police personnel. Following increased law enforcement attention after the police department attack, Babuk announced in May 2021 that they were ceasing ransomware operations and would focus solely on data theft and extortion, though various security researchers have observed continued sporadic activity from the group or actors using similar tools and techniques. The group has been linked to 188 public disclosures across our corpus. First observed on a leak site on October 25, 2020; most recent post April 23, 2025. The operation is currently inactive.

Timeline of this disclosure

January 27, 2025senseis.xmp.net listed by Babukon the group's public leak site

Other recent disclosures by Babuk

Babuk has been linked to 188 public victims on Darkfield. A sample of the most recent:

See the full Babuk dossier →

If your organisation is affected

A listing by Babuk means senseis.xmp.net 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 Babuk'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.