SLA.DK Listed by sinobi Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
SLA.DK was listed by the sinobi ransomware group on December 07, 2025, after internal files were exfiltrated in a ransomware attack. The number of people affected is not yet known; anyone connected to the organisation should check for official notices and consider changing passwords or monitoring their accounts.
What happened
On 7 December 2025, SLA.DK was listed by the sinobi ransomware group. The listing states that internal files were exfiltrated during a ransomware attack. No figure for the volume of data or the number of people affected has been made public, and the precise timing or method of the intrusion has not been disclosed.
Inside sinobi
Sinobi is a ransomware group that publicly lists organisations on its leak site after claiming to have carried out encryption and data theft operations. Such groups typically seek payment in exchange for not releasing stolen material. The listing of SLA.DK constitutes the group’s claim of involvement; independent confirmation of the claim has not been reported.
Who is SLA.DK?
SLA.DK is a multidisciplinary architectural practice with offices in Copenhagen, Aarhus and Oslo. The firm works on urban planning, landscape architecture and city-space projects across Denmark, Europe, Asia and Africa. Organisations of this type routinely store project documentation, client correspondence, technical drawings and internal administrative records.
The information in question
The only detail released is that internal files were allegedly exfiltrated. The exact categories of data contained in those files have not been confirmed. It is therefore not possible to state with certainty whether personal data, financial records or project-specific material were included.
The real-world impact
Exposure of internal files can create operational difficulties for the organisation and may place any individuals named in those documents at risk of targeted contact or misuse of their information. Because the scale of the exfiltration is undisclosed, the extent of these risks cannot yet be quantified.
Were you affected?
Individuals who have worked with SLA.DK or supplied personal details to the firm can take the following steps while further details remain unavailable:
- Monitor official statements from SLA.DK for any additional information on the scope of the incident.
- Run a free exposure scan of their email address against known breach data sets to check for prior appearances.
- Review account security settings and enable multi-factor authentication on services that may hold related information.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
More recent breaches
Trine Access Technology Listed by sinobi Ransomware GroupTACK Electronics Listed by sinobi Ransomware GroupPathmaker Group Listed by sinobi Ransomware GroupSecure Network Solutions Listed by sinobi Ransomware GroupLatest breaches
Read GalaxyWarden’s full analysis of the SLA.DK Listed by sinobi Ransomware Group →
Publicly posted by sinobi — 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.