Holborn European Marketing
thegentlemen listed this organization on its leak site on Aug 7, 2026.
- Listing date
- Aug 7, 2026
- Attack date
- Aug 6, 2026
Listing text
holborn.com.cy zoominfo.com/c/holborn-european-marketing-company-ltd/462273998 Holborn European Marketing Company Limited is a Cyprus-based energy trading firm established in 1987, operating from its headquarters in Larnaca. The company specializes in purchasing crude oil and feedstocks, selling refined petroleum products, and active oil trading. It serves as a major energy supplier that fulfills local market needs in Cyprus while also maintaining a significant operational presence as a key oil products supplier in Northern Germany.
About the group
thegentlemen posted its first listing on Sep 9, 2025 and has listed 1,253 organizations to date.
The Gentlemen is a RaaS group that emerged in July–August 2025, rapidly claiming over 320 victims across 17+ countries by offering affiliates a 90% revenue share, deploying a Go-based locker against Windows, Linux, NAS, and BSD systems; a compromised C2 server in 2026 revealed more than 1,570 linked victims.
Learning center
What does this listing mean?
Ransomware groups move data out of the organization before encrypting systems and threaten to publish it if the ransom is not paid. This method is called double extortion.
The listing shows that the group claims to have targeted the organization. Whether the data was published is shown by the later status of the listing.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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