K Subsea Group Listed by everest Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
K Subsea Group was listed by the everest ransomware group on 13 April 2026 after internal files were exfiltrated in a ransomware attack. The number of people affected is undisclosed; anyone with a connection to the company should check whether their information has been exposed and consider additional protective steps.
Breaking down the breach
The only confirmed detail is the April 13, 2026 listing by Everest. No information has been released on when the intrusion occurred, how many files were taken, or whether any data was later published. The scale of the incident and the method of initial access remain undisclosed.
Who is everest?
Everest is a ransomware group that maintains a public leak site where it lists organisations it claims to have targeted. The group typically follows a double-extortion pattern: it encrypts systems and also removes data, then uses the threat of publication to pressure victims. Its listings are presented by the group itself and are not independently verified at the time they appear.
About K Subsea Group
K Subsea Group is a Singapore-headquartered company that supplies integrated subsea solutions to the energy sector. It employs more than 800 people across Southeast Asia, with staff working both onshore and offshore. Organisations of this type routinely hold records relating to vessel operations, project schedules, personnel details and commercial contracts with energy clients.
The information in question
The listing refers only to “internal files exfiltrated in ransomware attack.” No inventory of specific data categories has been provided. In the subsea energy sector, such files commonly include operational reports, employee records, contractual documents and technical specifications, but the exact composition of the material allegedly taken from K Subsea Group has not been confirmed.
Why it matters
Exposure of internal operational files can create downstream risks for the individuals named in those records and for the projects they support. In the energy sector, such material may also affect commercial relationships and regulatory compliance obligations. The absence of Reported Details on the number of people or the nature of the files leaves the full extent of potential harm unquantified.
If your data was in this claimed breach
Individuals who work with or for K Subsea Group, or who have shared personal information with the company, should monitor their email and financial accounts for unusual activity. Enabling multi-factor authentication and reviewing privacy settings on professional platforms are immediate steps that limit further exposure. Readers can also run a free exposure scan of their email address against known breach data to check whether their information appears in public listings.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
More recent breaches
Parque Eólico Toabré Listed by everest Ransomware GroupBolttech Listed by everest Ransomware GroupAsopagos S.A. Listed by everest Ransomware GroupЕРМ Listed by everest Ransomware GroupLatest breaches
Read GalaxyWarden’s full analysis of the K Subsea Group Listed by everest Ransomware Group →
Publicly posted by everest — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.