Module 23 · Serverless Security — Functions, Event Sources, API Gateway

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
May 14, 2026
3 min read
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Why this module exists. Serverless — Lambda, Cloud Functions, Functions — shifts the security model. No servers to harden, but new attack surfaces: function permissions, event-source security, third-party dependency risk amplified, and operational invisibility. This module covers serverless security patterns.

The serverless threat model

What you no longer manage: OS patches, container runtime, network firewall (mostly). What becomes more critical: function code, IAM permissions, event sources, dependencies.

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