2026 Keysight Technologies — 0apt ransomware leak-site claim (unverified)
Data compromised
Actor teaser references electronic design automation software and 5G test data; field inventory and person count not independently validated — unverified
Technical writeup
Unverified ransomware / leak-site claim — HookPhish and DeXpose reported February 4–5, 2026 that 0apt listed Keysight Technologies (keysight.com) with a short teaser about electronic design automation software and 5G test data, threatening a leak if negotiations did not begin. Keysight had not issued a matching public confirmation in sources reviewed at indexing. Separate aggregator pages have also indexed Keysight among 2026 leak-site victims (including Everest attributions in some feeds); BreachHistory catalogs the attributable 0apt claim from HookPhish/DeXpose and does not treat aggregator-only Everest attributions as independently verified. recordsAffected 0 labeled unverified.
Root cause
Unverified 0apt ransomware/extortion leak-site listing naming Keysight Technologies (USA) — company had not confirmed at indexing time