Umiles Group Listed by everest Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
Umiles Group was listed by the everest ransomware group on April 20, 2026, after internal files were exfiltrated in a ransomware attack. An undisclosed number of people may be affected; check whether your information was involved and take steps to secure your accounts.
What happened
The incident came to light through a listing on the everest group’s leak site on the reported date. The entry asserts that files were taken from Umiles Group systems as part of a ransomware operation. No further technical details, such as the initial access method, encryption status, or ransom demand, have been made public. The number of people potentially affected is listed as unknown, and the company has not issued a statement confirming or denying the claims.
Who is everest?
Everest is a ransomware operation that has been publicly tracked since at least 2022. The group follows a double-extortion model: it encrypts victim systems and also removes data, then publishes samples or file listings on a dedicated leak site when payment is not received. Everest has previously claimed responsibility for intrusions into organisations across multiple sectors and countries. Its listings are presented by the group itself and are not independently verified at the time of publication.
Who is Umiles Group?
Umiles Group is a Spain-based technology and services firm that specialises in unmanned aerial vehicle operations, urban air mobility, and related regulatory and training work. Its activities support logistics, infrastructure inspection, surveillance, and emergency-response use cases, and it participates in European efforts to integrate drones into civil airspace. Organisations of this type routinely handle operational records, client contracts, technical specifications, and regulatory correspondence.
What was likely exposed
The only data category named in the listing is internal files exfiltrated during the ransomware attack. No inventory of specific file types, record counts, or time periods has been released. The exact contents therefore remain unconfirmed.
- Internal files were claimed to have been taken.
- No confirmed number of individuals affected.
- No verified list of data categories beyond the general description.
The real-world impact
Exposure of internal operational files can create risks for the organisation’s clients, partners, and regulatory relationships, particularly where sensitive inspection or emergency-response data is involved. For individuals whose information appears in those files, potential consequences include targeted follow-on activity such as phishing or account misuse, though the scale of any such exposure is not yet known. The organisation faces standard incident-response costs and possible regulatory scrutiny under European data-protection rules.
If your data was in this claimed breach
Monitor accounts associated with the organisation for unusual activity and enable multi-factor authentication where available. Review any official notifications issued by Umiles Group once further details are confirmed. Individuals can also run a free exposure scan of their email address against known breach data sets to check for prior appearances of their information.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
More recent breaches
ЕРМ Listed by everest Ransomware GroupNotin Listed by everest Ransomware GroupStudio Marchi - Studio Professionale Associato Listed by everest Ransomware GroupSymcor Listed by everest Ransomware GroupLatest breaches
Read GalaxyWarden’s full analysis of the Umiles 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.