The reported $6.3 billion Binance breach has put cryptocurrency security under renewed scrutiny, but the most significant concern may not be the amount stolen. Instead, the incident highlights how attackers can potentially bypass sophisticated blockchain defenses by exploiting something far more basic: trusted access to internal systems.

The cryptocurrency exchange initially said its investigation suggested a compromised DevOps engineer’s laptop may have allowed an attacker to access a service container and submit unauthorized withdrawals. In a later update, Binance said investigators had identified additional points of breach and were still establishing the full sequence. The company said it had found no evidence of leaked wallet…