Engineering Case Studies

Long-form architecture write-ups from our engineering team — reference designs for secure, regulated, and AI-driven systems, at the depth we build them. Capability, not client name-drops: no confidential details, no invented numbers.

Zero-Trust Network Segmentation for a Regulated Cloud Workload

How we replace a flat, perimeter-trusted VPC with identity-based microsegmentation, policy-as-code enforcement, and tamper-evident audit trails for regulated workloads.

SPIFFE/SPIREmTLS service meshKubernetes NetworkPolicyOPA/Rego policy-as-codeeBPF (Cilium)
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Data-Protection Architecture for Clinical Research

How sensitive clinical and research data is architected for least-privilege access, layered encryption, tamper-evident audit trails, and GxP/HIPAA/GDPR-style regulatory alignment.

Envelope encryption / KMSAttribute-based access controlPseudonymization & de-identificationAppend-only audit trailField-level encryption
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Email Security and Anti-Phishing Architecture

How SPF, DKIM and DMARC, gateway filtering, business-email-compromise defenses, and awareness training combine into a layered anti-phishing architecture for a professional-services firm.

SPF / DKIM / DMARCBIMISecure email gatewayDMARC aggregate reportingMFA / phishing-resistant auth
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OT/ICS Security Architecture for a Smart Factory

How a smart-factory floor is segmented into IEC 62443 zones and conduits, given protocol-aware monitoring and brokered remote access, without pretending the plant can be patched like IT.

IEC 62443 zones & conduitsPurdue reference modelData diode / unidirectional gatewayProtocol-aware IDS (Modbus/OPC UA/PROFINET)Jump host / brokered remote access
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PCI DSS Forensic Investigation Architecture

How a PFI-style payment-card investigation is architected: evidence preservation, chain of custody, cardholder-data-environment scoping, and a defensible workflow that survives scrutiny.

Forensic disk & memory imagingWrite-blockers & hashing (SHA-256)Chain-of-custody recordsCDE scoping & data-flow mappingLog & timeline reconstruction
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Pre-Launch Security Architecture Review for a Mobile Banking App

How a mobile banking app is threat-modeled, hardened against a hostile device, and made pen-test-ready before launch — treating the client as untrusted and the backend as the real boundary.

OWASP MASVS / MASTGSTRIDE threat modelingCertificate pinning & TLSOAuth 2.0 / OIDC + PKCEAndroid Keystore / iOS Keychain / Secure Enclave
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Ransomware Containment for a Multi-Site Network

How we architect rapid segmentation, blast-radius limiting, identity lockdown, and EDR isolation to stop ransomware spreading across many sites — the hospitality multi-site pattern, generically.

EDR mass isolationNetwork microsegmentationIdentity lockdown & session revocationSD-WAN / site-link controlTiered administrative model
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Ransomware Recovery and Resilience Architecture

How we design detection, isolation, immutable backups, and clean-room rebuild so a network like a school district's can recover from ransomware without paying and without guessing.

Immutable/object-lock backupsOffline air-gapped copiesEDR & network isolation3-2-1-1-0 backup strategyClean-room rebuild environment
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Security Architecture and Audit Methodology for a Cross-Chain Bridge

How a cross-chain bridge's trust model, validator/relayer set, and replay defences are architected and audited — treating the bridge as the highest-value target in DeFi.

Solidity / smart-contract auditThreshold signatures / MPCMultisig & timelock governanceMessage-passing & Merkle proofsNonce/replay & double-spend defences
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Security Architecture for a Fleet Management / Telematics Platform

How a telematics platform is architected for device identity, signed OTA updates, API hardening, and tenant isolation when the endpoints are vehicles you cannot physically trust.

Device PKI & attestationmTLS / MQTT over TLSSigned OTA (code signing)OAuth2 / mutual-auth APIsHSM / secure element
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