Launch Ready cyber security Checklist for founder landing page: Ready for first 100 users in AI tool startups?.

Launch Ready cyber security Checklist for founder landing page: Ready for first 100 users in AI tool startups?

"Ready" for a founder landing page is not "it loads on my laptop." It means a stranger can land, understand the offer, trust the setup, submit their email or book a call, and nothing in the stack exposes customer data, breaks deliverability, or leaves you open to abuse.

For an AI tool startup chasing the first 100 users, I would define ready as this: the page loads fast enough to keep ad spend from leaking, the domain and email are authenticated, secrets are not exposed in the browser, Cloudflare is protecting the origin, monitoring alerts you before users do, and every form or signup path is safe from spam and obvious abuse. If any of those fail, you are not launch ready.

The point is simple: remove launch risk before your first traffic spike turns into support load.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | HTTPS everywhere | All pages force SSL with no mixed content | Protects trust and prevents browser warnings | Users bounce, forms fail, SEO suffers | | Domain ownership | DNS records are correct and documented | Prevents hijack risk and broken routing | Site downtime or traffic sent to wrong host | | Email authentication | SPF, DKIM, and DMARC all pass | Improves deliverability and prevents spoofing | Emails land in spam or get rejected | | Secrets safety | Zero secrets in frontend code or public repos | Stops credential theft and API abuse | Billing fraud, data leaks, account takeover | | Cloudflare protection | WAF/CDN/DDOS rules active on origin | Reduces attack surface and improves speed | Origin gets hit directly by bots or attacks | | Redirect hygiene | www/non-www and http/https canonicalized | Avoids duplicate content and cookie confusion | SEO dilution and broken login/session flows | | Monitoring live | Uptime checks and alerting configured | You need to know about outages first | Silent downtime during launch campaigns | | Form abuse controls | Rate limit or anti-spam on forms/API routes | Blocks bot signups and inbox flooding | Fake leads, support noise, wasted spend | | Cache behavior sane | Static assets cached; dynamic content not cached blindly | Lowers latency without serving stale private data | Slow page loads or leaked user-specific content | | Deployment verified | Production build matches intended config | Prevents "works locally" failures at launch | Broken CTA flow or blank production pages |

A good target for this kind of landing page is LCP under 2.5 seconds on mobile, zero exposed secrets, SPF/DKIM/DMARC passing at 100 percent for outbound mail setup checks, and no critical auth bypasses anywhere in the stack. If you are running paid traffic before that baseline is met, you are paying to discover bugs.

The Checks I Would Run First

1. Domain and DNS integrity

• Signal: The domain resolves to the right app with no dangling records pointing at old hosts.
• Tool or method: `dig`, Cloudflare DNS dashboard, registrar audit.
• Fix path: Remove stale A/CNAME records, lock registrar access with MFA, document which subdomain points where.

2. TLS and mixed-content scan

• Signal: Every asset loads over HTTPS with no browser security warnings.
• Tool or method: Browser dev tools network tab, SSL Labs test.
• Fix path: Force HTTPS at Cloudflare or app level, update hardcoded `http://` links inside scripts/images/fonts.

3. Secret exposure review

• Signal: No API keys, private tokens, webhook secrets, or service credentials appear in frontend bundles or public repos.
• Tool or method: Search repo history plus built assets; run secret scanning.
• Fix path: Rotate anything exposed immediately. Move secrets to server-side env vars only.

4. Email authentication check

• Signal: SPF passes, DKIM signs correctly, DMARC policy is present and aligned.
• Tool or method: MXToolbox or Google Postmaster style checks.
• Fix path: Publish correct DNS records before sending invites or waitlist confirmations.

5. Cloudflare edge protection

• Signal: Origin IP is hidden behind Cloudflare; basic WAF/rate limiting exists.
• Tool or method: Inspect DNS proxy status; verify origin cannot be reached directly if intended.
• Fix path: Proxy records through Cloudflare where possible; firewall origin to allow only Cloudflare IP ranges.

6. Form abuse and monitoring test

• Signal: Bot submissions are blocked or slowed down; uptime alerts fire within minutes.
• Tool or method: Submit repeated form entries; simulate outage; check alert delivery.
• Fix path: Add rate limits, honeypot field, CAPTCHA only if needed; set uptime checks every 1 minute with email/SMS alerts.

Here is the simplest config pattern I would want behind a public landing page:

NEXT_PUBLIC_SITE_URL=https://yourdomain.com
API_SECRET_KEY=replace-me
WEBHOOK_SECRET=replace-me

If those values ever appear in client-side code logs or build output, stop the launch. That is not a cosmetic issue. That is credential exposure.

Red Flags That Need a Senior Engineer

1. You have production keys inside Lovable/Bolt/Cursor-generated frontend code

• This usually means the app was built fast without a clean server boundary.
• The risk is direct abuse of third-party APIs and surprise billing.

2. The site uses one deployment for everything

• Marketing page, auth callbacks, admin routes, webhooks all living together can create accidental exposure.
• One bad route can take down the whole launch.

3. You cannot explain where secrets live

• If nobody knows whether keys are in Vercel env vars, GitHub Actions secrets, Supabase edge functions, or local `.env`, you do not have control.
• That creates outage risk when someone rotates credentials under pressure.

4. Your email deliverability is untested

• If welcome emails go out from a new domain without SPF/DKIM/DMARC alignment,

your first 100 users may never see confirmation emails.

• That turns signups into support tickets immediately.

5. You expect traffic from ads but have no monitoring

• A landing page without uptime alerts is invisible when it fails.
• You will find out through refund requests after ad spend has already burned.

DIY Fixes You Can Do Today

1. Turn on MFA everywhere

• Registrar account
• Cloudflare
• Hosting platform
• GitHub

This cuts takeover risk fast.

2. Remove hardcoded secrets from code Search your repo for `sk-`, `pk_`, `secret`, `token`, `webhook`, and provider names like Stripe/OpenAI/Supabase/Firebase. If anything sensitive appears in source files committed to GitHub by mistake, rotate it today.

3. Force one canonical URL Pick either `www` or root domain as primary. Redirect all other variants there with 301s so search engines do not split authority and cookies do not behave oddly across subdomains.

4. Add basic uptime monitoring Use a simple monitor on homepage plus signup endpoint every 1 minute. Alert by email first; SMS if this page will receive paid traffic within 48 hours.

5. Check your outbound mail records Make sure SPF includes your sender platform only once per domain policy intent. Then publish DKIM signing from your provider and set DMARC to at least `p=none` while testing so you can see failures without blocking legitimate mail.

Where Cyprian Takes Over

If any of these checks fail badly enough that you are unsure how to fix them safely yourself, that is exactly where I step in with Launch Ready.

| Failure found | What I fix in Launch Ready | Timeline | |---|---|---| | Broken DNS / wrong domain routing | DNS cleanup, redirects setup, subdomains mapping | Hour 1-6 | | No SSL / mixed content / bad certs | SSL enforcement plus browser-safe asset cleanup | Hour 1-6 | | Exposed origin / weak edge protection | Cloudflare setup with DDoS protection basics and caching rules | Hour 4-12 | | Bad email deliverability setup | SPF/DKIM/DMARC records configured correctly with validation | Hour 6-12 | | Secrets scattered across codebase/envs/repos | Environment variable cleanup plus secret handling review and rotation plan | Hour 6-18 | | Production deploy uncertainty | Clean production deployment verification and rollback notes | Hour 12-24 | | No observability / no alerts | Uptime monitoring plus alert routing setup and handover checklist | Hour 18-36 | | Founder needs a safe handoff fast | Final audit notes with what changed and what still needs attention later full sprint follow-up if needed after launch window |

That includes DNS, redirects/subdomains if needed for launch structure, Cloudflare, SSL, caching, DDoS protection, SPF/DKIM/DMARC, production deployment, environment variables, secrets handling, uptime monitoring, and a handover checklist so you know what was changed.

For AI tool startups trying to reach the first 100 users quickly, I would prioritize safety over cleverness:

• First make the page trustworthy.
• Then make it fast.
• Then make it measurable.

That order protects conversion and avoids spending money on broken infrastructure.

References

• roadmap.sh cyber security best practices: https://roadmap.sh/cyber-security
• roadmap.sh API security best practices: https://roadmap.sh/api-security-best-practices
• Mozilla Observatory security guidance: https://observatory.mozilla.org/
• Cloudflare docs on SSL/TLS overview: https://developers.cloudflare.com/ssl/
• Google Workspace help on SPF/DKIM/DMARC basics: https://support.google.com/a/topic/2752442

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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.*