Keystone Breach Exposes Customer Data and Device Authentication Key, Sparking Security Concerns

TL;DR: An intrusion detected on October 20, 2026, exposed the personal information of 25,964 buyers and 12,873 incomplete purchase records. The attacker obtained the WebAuth authentication key used to validate device authenticity on the firm’s portal. The company will destroy 18,835 units in inventory and suspend direct shipments to replace the key at the factory level. Cold wallet manufacturer Keystone confirmed this Monday that a security flaw exposed customer records and a device authentication key following an intrusion into its official Shopify store. https://t.co/IbtXqeqKAX — Keystone Hardware Wallet (@KeystoneWallet) October 26, 2026 A cyberattacker exploited a critical vulnerability in a third-party data monitoring tool to gain elevated privileges within the company’s web systems.

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