"Private Key Not Leaked" Is the Most Dangerous Placebo: How to Choose Truly Reliable Cryptogr

imToken published an analysis arguing that the recurring "no evidence of private key compromise" statements following recent security incidents at major crypto firms offer users a false sense of security, since attackers increasingly bypass private keys entirely by exploiting the broader trust chain. The piece cites the Bybit hack, where attackers socially engineered a Safe developer's device to seize credentials and control Safe's front-end infrastructure; the Bitget breach, where a third-party security product vulnerability yielded high-privilege internal credentials used to forge withdrawal instructions past risk controls; and the Binance incident, which likely began with a compromised DevOps engineer's laptop, with the full attack path still under investigation. It also highlights data-breach risks: Coinbase's May 2025 insider bribery incident exposed customer personal data for later social-engineering attacks despite no direct loss of passwords, keys, or funds, while Keystone's October 20 website breach via a third-party monitoring tool leaked purchase records and WebAuth device-verification keys that could enable convincing counterfeit hardware wallets. imToken advises users to evaluate products on three dimensions: private key control (custodial vs. non-custodial, key generation location, and recovery rights), data minimization practices that reduce exposure to targeted "$5 wrench" attacks, and verifiable security architecture including open-source code and independent audits. The company warns that AI is amplifying these risks and that users should watch whether vendors disclose full attack paths, harden supply chains, and adopt independent verification of transaction-execution infrastructure.