Keystone Hardware Wallet Hack Leaks Customer Names and Home Addresses

TLDR Crypto hardware wallet maker Keystone confirmed that an unauthorized third party accessed customer shipping data, including names, contact details, and addresses. Keystone said it blocked access, fixed the vulnerability, and is emailing affected customers, but it has not said how many people were hit. Security researcher Taylor Monahan warned that leaked addresses could expose crypto holders to physical attacks and kidnappings. CertiK recorded 52 verified wrench attacks in the first half of 2026, up 33% from the same period last year.