Keystone breach deepens: Hackers stole key used to verify wallets as genuine

Keystone initially disclosed a leak of customer information but has since disclosed that hackers also stole a key that could allow counterfeit wallets to pass authenticity checks. Hardware wallet maker Keystone said an attacker who breached its website last week also stole a key used to verify the authenticity of its devices, widening the scope of an incident initially disclosed as a customer data leak. In a statement Monday, Keystone said the stolen authentication key could allow attackers to produce counterfeit wallets that pass its authenticity checks.