Launch Ready cyber security Checklist for AI-built SaaS app: Ready for support readiness in marketplace products?.

What "ready" means for an AI-built SaaS app in marketplace support mode

For a marketplace SaaS product, "launch ready" is not just "the app works on my machine." It means a real user can sign up, pay, log in, use the core flow, and get help without your team firefighting avoidable security or infrastructure issues.

For support readiness, I would define ready as:

• No exposed secrets in code, logs, or client bundles.
• Auth is enforced on every sensitive route and API.
• DNS, email, SSL, redirects, and subdomains are correctly configured.
• Production deployment is stable with monitoring in place.
• Support can answer tickets because alerts, logs, and ownership are clear.
• Marketplace traffic will not break onboarding, email delivery, or trust signals.

If you cannot confidently say "yes" to those points, you are not launch ready yet. You are still in prototype mode, and prototype mode burns time through failed onboarding, broken email verification, support load spikes, and preventable downtime.

I use it when the product exists but the business risk is still too high to put in front of customers.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | DNS | Root domain and key subdomains resolve correctly | Users must reach the right app and support endpoints | Broken login links, wrong app version loads | | SSL | HTTPS active on all public routes with no mixed content | Trust and browser security depend on it | Browser warnings, blocked assets, lost conversions | | Redirects | HTTP to HTTPS and www to non-www (or chosen canonical) work once only | Prevents duplicate URLs and SEO confusion | Looping redirects, bad indexing | | Email auth | SPF, DKIM, and DMARC all pass | Transactional email needs deliverability | Verification emails land in spam or fail | | Secrets | Zero secrets exposed in repo or client code | Prevents account takeover and data leaks | API abuse, billing fraud, data exposure | | Auth checks | Protected routes require auth server-side | Client-side only checks are not enough | Unauthorized access to customer data | | Rate limits | Sensitive endpoints have throttling | Protects against abuse and bot traffic | Login brute force, OTP spam, cost spikes | | Cloudflare | WAF/CDN/DDoS protection enabled where appropriate | Marketplace launches attract noisy traffic | Outages during launch traffic or attacks | | Monitoring | Uptime checks plus error alerts are live | Support needs early warning before users complain | Slow incident response and angry customers | | Handover docs | Owner list + recovery steps + deploy notes exist | Support team needs a usable runbook | Delayed fixes when something breaks |

A strong launch target here is simple: no critical auth bypasses, zero exposed secrets, SPF/DKIM/DMARC passing, and p95 API latency under 500 ms for the core app paths.

The Checks I Would Run First

1. Domain routing and canonical host

Signal:

• The app loads on exactly one canonical host.
• All other variants redirect once only.
• Subdomains like app., api., www., and support. go where intended.

Tool or method:

• Browser test plus curl against root domain variants.
• Check DNS records in the registrar and Cloudflare.

Fix path:

• Set one canonical host.
• Remove duplicate A/CNAME records.
• Add permanent redirects for non-canonical versions.
• Confirm no redirect loops before going live.

2. TLS and mixed content

Signal:

• HTTPS is enforced across all public pages.
• There are no browser warnings about insecure images, scripts, fonts, or API calls.

Tool or method:

• Browser dev tools network tab.
• SSL Labs test for certificate health.
• Lighthouse for page integrity checks.

Fix path:

• Force HTTPS at the edge.
• Replace any http:// asset URLs with https:// or relative paths.
• Renew certificates automatically through Cloudflare or your host.

3. Secret exposure audit

Signal:

• No keys appear in frontend bundles, Git history snapshots that matter now are cleaned up if possible by rotation.
• Environment variables are used only server-side where needed.

Tool or method:

• Search repo for common key patterns.
• Scan build artifacts and deployed bundles.
• Review hosting environment variables.

Fix path:

• Rotate any exposed keys immediately.
• Move secrets out of client code.
• Split public config from private config clearly.
• Revoke old tokens after deployment validation.

4. Authentication enforcement

Signal:

• Every protected endpoint checks identity on the server side.
• Role-based access is enforced consistently across UI and API.

Tool or method:

• Try direct API calls without a session token.
• Test with a low-permission account against admin routes.

Fix path: Use server-side guards first. A simple pattern looks like this:

if (!session?.user) {
  return new Response("Unauthorized", { status: 401 });
}

Then add authorization checks for roles such as admin or owner. Do not trust hidden buttons in the UI as security control.

5. Email deliverability setup

Signal:

• SPF passes.
• DKIM passes.
• DMARC passes with at least monitoring mode if you are early stage.

Tool or method:

• Use MXToolbox or your email provider diagnostics.
• Send test emails to Gmail and Outlook accounts.

Fix path:

• Publish correct DNS records from your provider.
• Use a verified sending domain like mail.yourdomain.com if needed.
• Make sure password reset and verification emails come from the same trusted sender identity.

6. Monitoring and incident visibility

Signal:

• You know when uptime drops below target before customers flood support.
• Error logs identify route names and request IDs without leaking secrets.

Tool or method:

• Add uptime monitoring every 1 to 5 minutes.
• Trigger alerts on 5xx spikes and failed deploys.
• Inspect production logs after a test failure.

Fix path: Set up basic alerting first: uptime check, error alerting, deploy notification. Then add structured logging so support can trace one issue from user report to server event fast. If you cannot see failures within minutes of launch traffic starting, you are blind at the worst time.

Red Flags That Need a Senior Engineer

1. You have authentication but no real authorization checks If every signed-in user can hit every endpoint by changing an ID in the URL or request body, that is a data leak waiting to happen. This is common in AI-built apps because the UI looks correct while the backend stays permissive.

2. Secrets were ever committed into GitHub If a Stripe key, OpenAI key, database URL with credentials, or JWT secret was pushed publicly even once without rotation discipline afterward it should be treated as compromised. This is not a cleanup task for later.

3. Your app depends on fragile client-side logic for critical flows If onboarding completion or payment state lives only in local state or frontend-only checks then refreshes will break users. That becomes support tickets fast after launch.

4. Email verification or password reset is inconsistent Marketplace products rely heavily on trust emails. If these land in spam or fail intermittently then users cannot onboard themselves which increases manual support work immediately.

5. You do not have rollback confidence If one bad deploy can take down login checkout or admin access without a clear rollback plan then you are one incident away from reputational damage. That risk usually costs more than fixing it properly upfront.

DIY Fixes You Can Do Today

1. Rotate every secret you can identify Start with database credentials API keys email provider keys payment keys webhook secrets and JWT signing keys. If you think something may have been exposed rotate it anyway.

2. Turn on Cloudflare protection Put DNS behind Cloudflare enable SSL set HTTP to HTTPS redirect turn on basic DDoS protection and cache static assets properly. This alone removes several common launch failures.

3. Verify SPF DKIM DMARC Use your mail provider instructions exactly then send test messages to Gmail Outlook and Apple Mail accounts. If any of them fail authentication fix DNS before launch day ends.

4. Test protected routes manually Open an incognito window log out then try direct access to dashboard admin billing settings API routes and invite pages if they exist. If anything still works unauthenticated that route needs server-side protection now.

5. Add uptime monitoring today Use a simple service like UptimeRobot Better Stack or StatusCake against your homepage login page and one authenticated health endpoint if available. Set alerts to email plus Slack so failures do not sit unnoticed overnight.

Where Cyprian Takes Over

Here is how I map checklist failures to Launch Ready deliverables:

| Failure area | What I fix in Launch Ready | Timeline | |---|---|---| | DNS misroutes / broken subdomains | DNS setup redirects canonical host subdomain mapping cleanup | Hours 1 to 6 | | SSL / mixed content issues | TLS enforcement cert validation asset URL cleanup edge rules | Hours 1 to 8 | | Secret exposure risk | Environment variable audit secret removal rotation guidance handover notes | Hours 2 to 12 | | Weak auth / unsafe routes found during review | Deployment-safe fixes around route protection session handling access control review | Hours 4 to 24 | | Email delivery problems | SPF DKIM DMARC configuration sender alignment inbox testing fix notes | Hours 6 to 18 | | No monitoring / poor visibility | Uptime monitoring error alerts logging checklist incident handover pack | Hours 10 to 24 | | Production deployment uncertainty | Production deployment verification smoke tests rollback notes final handoff checklist | Hours 18 to 48 |

My recommendation is straightforward: if you have more than two failures in the scorecard above buy the sprint instead of trying to patch everything ad hoc over a weekend. The hidden cost is not just engineering time; it is delayed launch confidence support overload failed marketplace reviews and lost first impressions from paid traffic.

Delivery Map

References

1. roadmap.sh - API Security Best Practices: https://roadmap.sh/api-security-best-practices 2. roadmap.sh - Cyber Security: https://roadmap.sh/cyber-security 3. roadmap.sh - Code Review Best Practices: https://roadmap.sh/code-review-best-practices 4. Cloudflare SSL/TLS documentation: https://developers.cloudflare.com/ssl/ 5. OWASP ASVS: https://owasp.org/www-project-web-security-testing-guide/

---

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.*