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.
Source: [CoinTelegraph](https://cointelegraph.com/news/keystone-breach-deepens-hackers-stole-key-used-to-verify-wallets-as-genuine?utm_source=rss_feed&utm_medium=rss&utm_campaign=rss_partner_inbound)