Cold Trust Window Attack vs Surface Repair Attack — 실무 담당자 비교 FAQ
Cold Trust Window Attack exploits a 0.4‑second trust admission gap and reaches 68% infiltration, while Surface Repair Attack leaves 57% residual corruption and requires 2.6× more remediation effort; prioritize Cold Trust Window defenses in real‑time admission systems, but switch priority to Surface Repair mitigation when graph rewrite exceeds 35% per recovery cycle.
Cold Trust Window Attack: 침투 메커니즘과 즉시성 위험
Cold Trust Window Attack targets the narrow interval between proof issuance and downstream trust propagation. In the observed model, that interval lasts 0.4 seconds, and adversaries can exploit it to inject forged or mistimed credentials before synchronization closes, producing a 68% infiltration rate. Because the attack succeeds at the moment of admission, its operational danger is highest in real‑time environments where trust decisions are made immediately and rolled forward without delay.
Surface Repair Attack: 복구 이후에도 남는 오염과 비용
Surface Repair Attack does not primarily attack initial admission; instead, it abuses rollback, repair, and restoration workflows after the system appears to be recovering. That makes it more insidious for mature pipelines, because 57% of repaired graphs still retain corrupted trust edges after nominal remediation and teams must spend 2.6× more effort to identify and purge the remaining contamination. The attack therefore shifts the problem from initial intrusion to expensive, repeated clean‑up cycles that prolong exposure and distort confidence in recovery metrics.
위험 등급 비교와 우선순위 전환 기준
The two attacks should not be ranked with a fixed universal rule; their priority depends on the operational phase of the trust graph. If the environment is dominated by real‑time admissions, Cold Trust Window Attack is the higher‑risk issue because a 0.4‑second gap can immediately compromise a large share of new trust edges. If automated recovery rewrites more than 35% of graph state per cycle, however, Surface Repair Attack becomes the more dangerous threat because residual corruption compounds across recovery loops and overwhelms teams with repeated remediation work.
실무 대응: 단일 제어가 아닌 복합 제어
A single defensive mechanism is not sufficient once trust contamination has both entered and propagated through the graph. Bias attenuation reduces the amplification of distorted trust scores, while anchor revocation removes compromised reference points that would otherwise keep poisoned edges alive through later repairs. In combination, those controls reduce collapse severity from 37% to 9%, which is why response plans should pair admission hardening with recovery‑phase integrity controls rather than treating them as separate programs.