Launch Ready cyber security Checklist for AI-built SaaS app: Ready for app review in bootstrapped SaaS?.

What "ready" means for an AI-built SaaS app

For a bootstrapped SaaS, "ready" does not mean perfect. It means a user can sign up, pay, use the product, and get support without your app exposing secrets, breaking email delivery, or failing basic review checks.

For app review, I would define ready as this: no exposed API keys, no auth bypasses, HTTPS everywhere, working custom domain and redirects, SPF/DKIM/DMARC passing, uptime monitoring in place, and a deployment that can survive real traffic without manual heroics. If one of those fails, you are not launch ready; you are one bug report away from downtime, account takeovers, or a failed review cycle.

That is the right move when the product is close but the launch risk is in infrastructure and security hygiene.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | HTTPS everywhere | All public pages redirect to HTTPS with valid certs | Protects logins and payments | Browser warnings, blocked auth flows | | No exposed secrets | No keys in repo, logs, client code, or build output | Stops account takeover and data leaks | API abuse, billing loss, breach | | Auth hardening | Protected routes require auth and role checks | Prevents unauthorized access | Customer data exposure | | Email authentication | SPF, DKIM, and DMARC pass | Keeps transactional email out of spam | Signup emails fail, password resets fail | | Domain routing | Root domain and www/subdomains resolve correctly | Avoids broken onboarding links | Lost traffic and failed redirects | | Cloudflare protection | DDoS protection and caching enabled where safe | Reduces attack surface and load spikes | Slow site or outage under traffic | | Deployment sanity | Production build deploys cleanly with env vars set | Prevents broken release day surprises | Blank screens or runtime crashes | | Monitoring live | Uptime checks alert on failure within 5 minutes | Shortens outage detection time | You find outages from customers | | Logs are safe | Logs exclude secrets and PII where possible | Limits blast radius after incidents | Sensitive data leaks into tools | | Review readiness | No critical security findings or broken flows in test run | Improves approval odds | App review rejection or delay |

The Checks I Would Run First

1. Public surface scan

• Signal: every public route loads over HTTPS, redirects are consistent, and no mixed content appears in the browser console.
• Tool or method: open the site in incognito mode, run Lighthouse once on desktop and mobile, then inspect network requests for HTTP assets.
• Fix path: force HTTPS at the edge with Cloudflare or your host, replace insecure asset URLs, and remove any third-party script that still calls HTTP endpoints.

2. Secrets exposure check

• Signal: no `.env` values in client bundles, Git history, screenshots, logs, or error pages.
• Tool or method: search the repo for known key patterns; run a secret scanner; inspect browser source maps if they are public.
• Fix path: rotate any exposed key immediately. Move secrets server-side only. Treat every leaked token as compromised even if you think nobody saw it.

3. Auth and authorization check

• Signal: an unauthenticated user cannot access dashboard routes, API endpoints reject missing tokens correctly, and users cannot read another tenant's data by changing IDs.
• Tool or method: test direct URL access in an incognito window; call APIs with empty headers; try horizontal privilege escalation by swapping record IDs.
• Fix path: enforce auth at the route level and again at the service layer. Add ownership checks on every tenant-scoped query.

4. Email deliverability check

• Signal: SPF passes for your sending provider; DKIM signs outbound mail; DMARC is set to at least `p=quarantine` once verified.
• Tool or method: send a test signup email and password reset email to Gmail and Outlook; inspect headers with MXToolbox or similar.
• Fix path: add DNS records correctly through your domain host. If transactional mail is landing in spam now, fix alignment before launch because failed email kills activation.

5. Deployment integrity check

• Signal: production deploy completes from a clean build with all required environment variables present.
• Tool or method: run a full production build locally or in CI; compare runtime env vars against a checklist; verify migrations are applied safely.
• Fix path: separate build-time from runtime config. Never commit env files. If the app crashes only after deploy, fix the config drift before shipping more code.

6. Monitoring and rollback check

• Signal: uptime monitoring is active for homepage plus critical user journeys like login and checkout.
• Tool or method: configure 5-minute probes from at least two regions; test alert delivery to email or Slack; confirm rollback steps exist.
• Fix path: add health checks for app status and dependencies. If you cannot explain how to roll back in under 10 minutes, your release process is not production-safe.

Red Flags That Need a Senior Engineer

1. You already found a leaked key

• If a live API key was committed to GitHub or printed in client-side code once before launch review, I would not DIY this. Rotation has to be done carefully so you do not break production while closing the leak.

2. Multi-tenant data can be accessed by changing IDs

• This is not a cosmetic bug. It is an authorization flaw that can expose customer records across accounts.

3. Email is inconsistent across providers

• If Gmail works but Outlook lands in spam or resets do not arrive at all, you have deliverability problems that will hurt activation rates immediately.

4. The deployment only works on one machine

• If local works but production fails because of env vars, build steps, image paths, or migrations, you need someone who understands release engineering end to end.

5. You do not know what changed last time it broke

• If there is no changelog discipline or rollback plan after failed deploys already happened once or twice this month,, then launch risk is now business risk.

DIY Fixes You Can Do Today

1. Remove obvious secrets from code

• Search for `sk_`, `pk_`, `api_key`, `secret`, `token`, and provider names in your repo.
• Delete any values from frontend code immediately.

2. Turn on HTTPS redirects

• Make sure both `http://` versions of your domain redirect to `https://`.
• Confirm `www` and root resolve to one canonical version only.

3. Add SPF now

• If you send mail through one provider only,, publish one SPF record first instead of stacking multiple broken records.
• Keep it simple until verification passes.

4. Test login from incognito

• Open your app in private browsing mode.
• Try sign up,, sign in,, password reset,, logout,, then re-access protected pages directly by URL.

5. Set up basic uptime alerts

• Use a simple external monitor for homepage,, login,, and checkout endpoints.
• Alert yourself by email first so you stop learning about outages from users.

A practical DNS example:

v=spf1 include:_spf.google.com include:sendgrid.net ~all

Use only the providers you actually send from. A bloated SPF record can break validation just as badly as having none at all.

Where Cyprian Takes Over

• Broken domain routing -> I set up DNS records,, subdomains,, canonical redirects,, Cloudflare proxying,, SSL issuance,, and cache rules.
• Email failing -> I configure SPF/DKIM/DMARC,, verify sender alignment,, test transactional mail,, and reduce spam risk before launch.
• Exposed secrets -> I move secrets out of the client,,, rotate compromised credentials,,, clean environment variables,,, and verify least privilege.
• Unstable deployment -> I ship production deployment changes,,, validate environment configuration,,, confirm build/runtime parity,,, and check rollback safety.
• No monitoring -> I add uptime checks,,, alerting,,, basic logging hygiene,,, and handover notes so you are not blind after launch.
• App review blockers -> I run through the release path like an app reviewer would,,, looking for broken flows,,, insecure config,,, missing metadata,,, slow pages,,, and obvious trust issues.

My delivery sequence is simple: 1. Audit current state within hours 1 to 4. 2. Fix DNS,,, SSL,,, email auth,,, deployment,,, secrets,,,,and monitoring within hours 4 to 36. 3. Re-test key user flows,,,, document handover,,,,and give you a final checklist by hour 48.

If you are bootstrapped,, this matters because every extra week spent debugging infra burns founder time,,, delays revenue,,,,and increases support load right when you need traction most.

References

• roadmap.sh Code Review Best Practices: https://roadmap.sh/code-review-best-practices
• roadmap.sh API Security Best Practices: https://roadmap.sh/api-security-best-practices
• roadmap.sh Cyber Security Roadmap: https://roadmap.sh/cyber-security
• OWASP ASVS: https://owasp.org/www-project-application-security-verification-standard/
• Cloudflare SSL/TLS documentation: https://developers.cloudflare.com/ssl/

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Take the next step

If this is a problem in your product right now, here is what to do next:

• [Use the free Cyprian tools](/tools) - estimate cost, score app risk, check launch readiness, or pick the right service sprint.

• [Book a discovery call](/contact) - I will tell you honestly whether you need a sprint or if you can DIY the next step.

*Written by Cyprian Tinashe Aarons - senior full-stack and AI engineer helping founders rescue, launch, automate, and scale AI-built products.*