Coinbase reveals it once guarded cold storage keys with Faraday cages
- —Keys were generated in Faraday-caged tents at unpredictable San Francisco locations
- —Two factory-sealed, air-gapped laptops were used: one Linux, one MacBook
- —The generating laptop was selected by coin toss to prevent pre-tampering
- —Laptops and printers were physically destroyed after the ceremony; keys split via Shamir's scheme
Why it matters: The disclosure shows cold storage security hinges on the moment keys are created, not just where they are stored.
Source: Crypto Briefing