Keystone Breach Update: Stolen Key Could Let Fake Wallets Pass Verification

Keystone, a major hardware wallet manufacturer, says the attacker who compromised its website last week didn’t stop at leaking customer data. The breach also involved theft of an authentication key used to verify the authenticity of Keystone devices—raising the risk that counterfeit wallets could be made to pass the company’s checks. In a statement shared Monday on X, Keystone warned that the stolen key could enable adversaries to produce cloned hardware wallets that appear legitimate to buyers.