atos
VanHelsingThis record tracks a ransomware attack claimed by the VanHelsing group against atos. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
assemblies.atos appears to be an Atos-related entity in France, within a broader group known for digital transformation, secure IT services, and communications-oriented enterprise solutions. Atos is headquartered in Bezons, near Paris, and its services brand delivers AI-powered, secure, end-to-end digital services to public and private organizations worldwide. Public profiles describe the group as active in cloud, cybersecurity, big data, and unified communications, with global operations and consulting capabilities. In threat-intelligence catalogs, assemblies.atos was listed as a ransomware victim associated with VanHelsing.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.