The three most damaging insider threat vectors in trading firms are not exotic. Traders front-running client orders. Engineers with signing key access disappearing. Admins manipulating order routing for a third-party beneficiary.
The structural defense is cryptographic accountability — every order signed by a key that can be attributed to a specific identity, with an immutable audit trail. If no human can produce a valid signature without the enclave's attestation, front-running requires compromising the hardware, not just a login.
The full article covers: separation of duties implementation, behavioral anomaly detection patterns for order flow, secure execution path design, and the compliance trail requirements under MiFID II and SEC Rule 17a-4.