API Security

APIs expose business capabilities to browsers, mobile applications, partners, internal services, and AI agents. They are frequently changed and may exist outside an official gateway or catalog. The most consequential failures often concern business authorization rather than malformed traffic: one caller can read another customer's object, invoke an administrative function, or automate a valid workflow at harmful scale.

Additional risks include forgotten versions, weak token handling, excessive data fields, server-side request forgery, unsafe third-party API consumption, resource exhaustion, and poor event context. An edge control alone cannot infer every object relationship or business rule.

A reference pattern starts with discovery and ownership. Identity infrastructure issues bounded credentials; an API gateway handles transport-level policy, validation, and quotas; and each service enforces object, property, and function authorization using server-side context. Sensitive outbound requests pass through controlled egress. Schema and behavioral changes feed inventory and review, while logs carry caller, decision, object class, and trace identifiers without unnecessarily recording secrets.

Depending on the agreed rules of engagement, Alexa Cybersecurity can discover API sources, review designs and specifications, model threats, test authentication and authorization, examine abuse and rate controls, and assess build and logging practices. Scope may produce an inventory, risk-ranked findings, architecture recommendations, test cases, or a remediation roadmap. Production testing requires explicit safety limits and customer authorization.

Options include a design review, controlled assessment of selected endpoints, CI/CD security gates, or architecture for gateways and service meshes. Recommendations depend on API style, traffic, legacy constraints, identity model, sensitivity, and operating team. REST, GraphQL, gRPC, event interfaces, partner APIs, and machine-to-machine flows require different tests.

Relevant use cases span open banking, healthcare exchange, government services, e-commerce, SaaS, telecommunications, and industrial platforms. Related technologies include API management, IAM, WAF, service mesh, secrets management, SAST, DAST, SIEM, and cloud workload protection. No review discovers every undocumented interface or guarantees that future releases remain secure; coverage and validation criteria are documented for the assessed scope.