Security isn't a phase you bolt on after product-market fit — for a SaaS startup it has to be embedded across three connected domains from day one: corporate security, product security, and third-party risk.
Corporate security covers the basics done well: asset management, SSO and MFA on every identity, reliable backups, zero-trust network access, employee training, and alignment with standards like SOC 2 and GDPR — paired with clear policies and an incident-response plan.
Product security means building protection into the development lifecycle: threat modeling at the requirements stage, secure coding, automated testing in CI/CD, hardened cloud infrastructure (AWS, Azure, GCP), APIs secured with OAuth and SAML, tested backup and recovery, and a responsible-disclosure program.
Third-party risk rounds it out — vet vendors' certifications, write security clauses into contracts, monitor adherence continuously, enforce least-privilege access, and offboard partners cleanly. Track it all with real metrics — training completion, time-to-remediate, vendor compliance — and treat the program as continuous improvement, because the threats keep moving.
Last updated Mar 10, 2025