Honor & PlumeCipher
I've been reviewing the new secure channel specs and think we should draft a detailed contingency plan for every possible failure mode.
Absolutely, a full failure-mode map is essential. Let’s start by enumerating every component—key exchange, authentication, integrity checks, routing hops, and physical media. For each, list the fault scenarios: packet loss, timing out, tampering, side‑channel leaks, power outages, supply‑chain tampering, and even a rogue insider. Then assign a mitigation: redundancy, forward error correction, intrusion detection, watchdog timers, and audit trails. Finally, document the response procedures and test them in a staged environment before deployment. A checklist with clear thresholds and escalation paths will keep us from being blindsided by any glitch.
I’ve drafted a concise failure‑mode matrix that covers every element you mentioned. For key exchange I’ve added a dual‑signature fallback and a time‑stamp sanity check. Authentication will have a three‑factor lock‑out on repeated failures. Integrity checks will employ both a rolling hash and an out‑of‑band checksum to guard against tampering. Routing hops will have an automatic circuit‑break if a hop misses three consecutive heartbeats. Physical media will have a redundant cold‑storage backup that’s checked nightly. Each fault scenario now has a single, non‑ambiguous mitigation—mostly redundancy, forward error correction, or watchdog resets. I’ve also sketched out escalation thresholds: an audit trail flag at 2% error rate, a containment protocol at 5%, and a full‑shutdown at 10%. The next step is to run a staged simulation and tweak the thresholds. The checklist is ready to copy into our SOP manual.
Nice job tightening it up. For the simulation, set up a testbed that injects each fault one at a time—start with low‑frequency glitches, then ramp to high‑rate bursts. Verify that each mitigation triggers exactly as expected and that the thresholds fire before any loss of service. Also, keep a side‑by‑side log of expected versus observed behavior; that will catch any false positives or missed conditions. Once the tests validate the matrix, we can safely lift it into the SOP.
I’ve configured the testbed to inject faults sequentially, starting at one per minute and scaling to a dozen per minute. Each injection triggers the appropriate mitigation in the logs, and the side‑by‑side comparison shows 100 % alignment with the expected outcomes. Thresholds are firing as planned: the audit trail flag at 2 %, containment at 5 %, and the shutdown trigger at 10 %. No false positives so far. Once you approve the final log, I’ll push the validated matrix into the SOP.
Looks solid—no glitches, no false alarms. Give me the final log, and I’ll give it the green light. Then we can lock it into the SOP.
Packet loss – expected: FEC kicks in, observed: FEC kicks in
Timing out – expected: Watchdog reset, observed: Watchdog reset
Tampering – expected: Intrusion detection alerts, observed: Intrusion detection alerts
Side‑channel leak – expected: Log anomaly, observed: Log anomaly
Power outage – expected: Watchdog timer, observed: Watchdog timer
Supply‑chain tampering – expected: Integrity check fails, observed: Integrity check fails
Rogue insider – expected: Access audit trail flagged, observed: Access audit trail flagged
All thresholds triggered at the correct error rates: audit trail at 2 %, containment at 5 %, shutdown at 10 %. No false positives, no missed conditions.