Malmsten
thegentlemen listed this organization on its leak site on Oct 31, 2026.
- Listing date
- Oct 31, 2026
- Attack date
- Oct 26, 2026
Listing text
malmsten.com Malmsten AB is a Swedish family-owned company founded in 1975 in Täby, the world's leading manufacturer of swimming pool and open water equipment including lane lines, buoys, starting blocks and safety gear. With around 30 employees and global distribution, its equipment has been used at 11 consecutive Olympic Games from Moscow 1980 to Paris 2024. Founder Robert Malmsten received the FINA Gold Pin Award in 2024 for 48 years of service to the international swimming federation's equipment committee. The company's proprietary wave calming technology reduces turbulence in competition lanes, making its Golden Series the gold standard for elite swimming events. Led by CEO David Malmsten in the second generation, it operates a subsidiary in Australia and serves 100 plus national swimming federations worldwide. Key strengths are FINA approval, Olympic heritage and a full product range from elite competition to public pool equipment.
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.
Is your organization mentioned?
Search with your domain to check whether your organization appears in ransomware listings, leaked records, forums and Telegram channels.
Search your domainIntelligence 360
Customer intelligence on top of Infostealer Detection: leaked accounts of end users who sign in to your site.