M. Malmsten AB
bd_0a9502629c18db4e · schema v1 · pii pii-v2
Full breach record for M. Malmsten AB →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Thegentlemen on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
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.
J jump to incidentP pin to compareR raw source
Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 26, 2026
Claim posted
—
No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
—
Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
thegentlemen
According to ransomware.live, 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.