From Zero to Audit-Ready: The 90-Day Security Plan
A step-by-step roadmap to build your SaaS startup's security foundations, from access management to your first official audit.
When launching a SaaS, security is often pushed aside. Yet, building without secure foundations leads to costly rewrites. This 90-day action plan guides you step-by-step: from managing secrets and RLS policies in month one, to API hardening, culminating in a validation audit on Day 75, ready for your first major clients.
Days 1-30: Foundations (Auth, RLS, Secrets)
Month one must lock down data access. Never leave default configurations in production. Ensure authentication is robust (complex passwords, Argon2/bcrypt hashing). If you use Supabase or Postgres, formally enable and configure Row-Level Security (RLS) on all tables. Audit your environment variables. Make sure no private keys (Stripe, OpenAI) are leaked to the client via prefixes like NEXT_PUBLIC_. This is the absolute baseline.
Days 31-60: Hardening (API, Validation, Monitoring)
Month two focuses on interactions and data flow validation. Every API endpoint or Server Action must verify permissions. Actively protect against IDOR flaws by asserting business object ownership on every single request. Implement strict input validation (Zod is excellent for this) and enable basic security logging to monitor for recurring authentication failures.
Days 61-90: Validation & Compliance (The Security Audit)
Month three is about third-party validation before opening up to the broader market or B2B deals. Around day 75, schedule an external security review. This is the perfect time for the Validra Security Review. For €790 and in 5 days, you get independent validation of your last 60 days of work. Finalize your incident response plan (who to contact during a breach) and publish a security page on your website featuring your new Validra attestation.
A pre-production security audit costs 30 times less than post-incident remediation.
Frequently asked questions
When should I audit a new SaaS?
The best time is right before public launch (around day 75 of development), when core features are stable but real users aren't fully active yet.
What is the top priority in month one?
Data protection at rest and authentication: locking the database (RLS) and securing environment variables.
Why use Validra instead of a classic firm?
Validra focuses on modern stacks with a fixed price (€790), ideal for startups needing reliable technical validation without enterprise bureaucracy.
Is your SaaS ready for production?
Identify critical vulnerabilities before your users do with the Validra Security Review in 5 business days.