PCI-DSS

Prerequisite: In-depth knowledge of applied cryptography, public key infrastructure (PKI), HSM operations, PCI-DSS compliance specifications, and distributed audit logging. Part 6: Core Banking Security, PCI-DSS & Audit Trails Answer-first: Core banking security and regulatory compliance mandates implementing PCI-DSS v4.0 cryptographic key management with hardware security modules, FAPI 2.0 mutual TLS authentication with sender-constrained tokens, real-time machine learning fraud detection engines, and tamper-evident Merkle tree cryptographic audit trails that guarantee non-repudiation and withstand rigorous state regulatory compliance examinations. ...

Zero-Trust Service Mesh Security in Go: SPIFFE/SPIRE & Istio Answer-first: Zero-trust service mesh security in Go enforces cryptographic workload identities using SPIFFE/SPIRE kernel attestation (cgroups, namespaces, image digests) and Istio STRICT mTLS, eliminating static credentials. Rotating short-lived X.509 SVID certificates in memory every hour guarantees zero downtime, while fine-grained AuthorizationPolicy rules restrict inter-service communication to least-privilege paths complying with PCI-DSS 4.0 requirements. Prerequisite: Production familiarity with Kubernetes ServiceAccount tokens, Linux kernel cgroups and process namespaces, TLS 1.3 mutual authentication handshakes, and Go 1.25 network programming with gRPC transport. ...