Zero Trust Security for Startups: A Pragmatic Guide

What Zero Trust Actually Means

Zero trust is not a product — it is a principle: never trust, always verify. It means every request is authenticated, authorized, and encrypted, regardless of where it comes from. You do not buy zero trust; you build it into your architecture.

The Minimum Viable Stack

Start with identity: SSO with MFA for every employee. Then network: no open ports, everything behind a VPN or zero-trust network access tool. Then data: encryption at rest and in transit, secrets in a vault, not in env files. Then code: dependency scanning, SAST in CI, and secrets scanning on every commit.

What to Do Tomorrow

Turn on MFA for everything. Move secrets to a vault. Run a dependency scan. Enable SSO. These four steps take a week and close the majority of startup security gaps. Everything else is iteration.