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Listed on a ransomware leak site

Ascom Holding AG

ascom.com

Ascom Holding AG was listed on the Hellcat leak site on Mar 15, 2025. Information as of Oct 19, 2026.

Updated continuously · figures as of Oct 19, 2026
Claimed by
Hellcat
First listed
Mar 15, 2025
Claims recorded
1

Leak-Site Claim.

HellcatConfirmed claim
Posted on the leak site
Mar 15, 2025
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated
Leak-site post text, written by the group
44GB of sensitive data including internal reports, sales documents, confidential contracts, development tools, and source code stolen from Ascom.

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.