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Technical Audit Methodology & Threat Modeling

Step through STRIDE threat modeling, state machine transition verification, concurrency race auditing, and dependency verification

PHASE: BOUNDARY MAPPINGUNTRUSTED INGRESSUNTRUSTED ZONEClient App / WebHTTPS / RESTExt WebhooksJSON PayloadTRUST BOUNDARY ADMZ INGRESS & AUTHEdge WAF & GatewayTLS Term / Rate LimitAuth & Token ServiceJWT VerificationTRUST BOUNDARY BSECURE CORECore FSM LedgerInternal mTLSDB & KMS VaultAES-256 / RLS
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System Architecture & Trust Boundary Mapping

Before analyzing code, auditors draw data flow diagrams to map system boundaries. This identifies entry points where untrusted data enters (public APIs, webhooks, edge proxies), privilege boundaries (internal microservices, admin consoles), and high-value target assets (database stores, KMS signing keys). Establishing trust boundaries focuses auditing on attack vectors.

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