The End of Crypto Cold Wallets After Keystone, Coldcard, Ledger…Hack ?

After the intrusion of Keystone on October 20, six major players in crypto security are now facing attacks in 2026. Between hardware hacks and massive data leaks, the crisis of confidence hitting every cold wallet is now shaping up to be historic and worrying investors. The dogma that storing private keys in a physical device guarantees absolute security has just taken a fatal blow. Within a few months, cybercriminals in 2026 have demonstrated their ability to target crypto security across the entire chain. This includes key generation, and corruption of hardware supply chains and email subcontractors.