Launch Ready cyber security Checklist for founder landing page: Ready for app review in founder-led ecommerce?.

What "ready" means for a founder-led ecommerce landing page

For this product and outcome, "ready" means a customer can land on the page, trust it, submit an email or order, and not expose your business to avoidable security failures. It also means your domain, email, SSL, redirects, monitoring, and deployment are set up so app review or launch checks do not bounce you for basic infrastructure issues.

If I were self-assessing this before launch, I would want all of the following to be true:

• The page loads over HTTPS with no mixed content.
• The primary domain resolves correctly, and non-www to www redirects are consistent, or the reverse.
• Email authentication passes with SPF, DKIM, and DMARC aligned.
• No secrets are exposed in frontend code, logs, or public repos.
• Cloudflare is protecting the site with caching and DDoS controls enabled.
• Uptime monitoring is active and alerts reach a real human.
• Deployment is repeatable, documented, and reversible.
• Any forms or checkout links do not leak customer data or allow spam abuse.
• The page meets a basic performance threshold: LCP under 2.5s on mobile for the core landing page.
• There is a handover checklist so the founder can keep operating it after launch.

If even one of those fails, you are not ready. You may still have a nice-looking page, but you do not have a production-safe launch.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | HTTPS | All traffic forces SSL with no mixed content | Trust and browser safety | Browser warnings, lower conversion | | Domain routing | One canonical domain and clean redirects | SEO and user trust | Duplicate pages, broken links | | SPF/DKIM/DMARC | All pass and align | Email deliverability | Emails land in spam or fail review | | Secrets handling | Zero secrets in client code or repo | Prevents account takeover | API abuse, data exposure | | Cloudflare setup | DNS proxied where appropriate, caching on | Speed and protection | Slow load times, attack surface | | DDoS protection | Basic rate limits and bot controls enabled | Keeps site online under abuse | Downtime during spikes or attacks | | Deployment hygiene | Production build is stable and repeatable | Prevents bad releases | Broken page after deploy | | Monitoring | Uptime checks and alerts active 24/7 | Fast incident response | Problems go unnoticed for hours | | Form security | Spam control and input validation in place | Protects inbox and CRM quality | Spam floods, malformed leads | | Handover docs | Clear owner guide exists | Reduces dependency on the builder | Founder gets stuck after launch |

The Checks I Would Run First

1) DNS points to the right place

Signal: the apex domain and www subdomain resolve exactly as intended, with no stray records pointing to old hosts. I also check that subdomains like app., mail., or admin. are intentional and not accidentally public.

Tool or method: I use `dig`, `nslookup`, Cloudflare DNS view, and a browser test from an incognito session. I also verify redirect chains with `curl -I` so I can see whether requests loop or split between hosts.

Fix path: remove stale A, AAAA, CNAME, or TXT records that are no longer needed. Then set one canonical host and redirect everything else to it with a single 301 chain.

2) SSL is valid everywhere

Signal: every route loads over HTTPS without mixed content warnings. The certificate must be valid for the exact hostnames in use.

Tool or method: browser dev tools, SSL Labs test, and direct checks against homepage plus any checkout or form endpoints. I also inspect images, scripts, fonts, and embedded widgets for insecure URLs.

Fix path: issue or renew certificates through Cloudflare or your hosting provider. Then update hardcoded asset URLs so nothing tries to load over HTTP.

3) Email authentication passes

Signal: SPF includes only approved senders, DKIM signs outbound mail correctly, and DMARC is set to at least `p=quarantine` once testing is stable. For launch readiness, I want visible pass results from the mailbox provider you actually use.

Tool or method: MXToolbox-style checks plus sending test emails to Gmail and Outlook headers inspection. If possible, I verify alignment at the domain level rather than just "record exists".

Fix path: publish correct SPF records with no extra senders. Enable DKIM signing in your email platform. Add DMARC reporting so spoofing attempts are visible.

4) Secrets are not exposed

Signal: there are zero API keys, private tokens, database URLs with credentials embedded in frontend bundles, Git history snippets on public repos that still work. This is one of the most common founder mistakes.

Tool or method: search the repo for `sk_`, `pk_`, `secret`, `token`, `api_key`, `.env`, plus automated secret scanners like Gitleaks. I also inspect built assets because many tools leak values into compiled JavaScript by accident.

Fix path: move secrets into environment variables on the host platform only. Rotate anything that may have been exposed already. If a key was public even briefly, assume it is compromised.

5) Cloudflare protections are actually enabled

Signal: DNS proxying is active where needed, caching rules are sensible for static assets, bot traffic is filtered enough to stop obvious abuse, and DDoS protection is on by default. The site should not depend on origin IP exposure for normal traffic.

Tool or method: Cloudflare dashboard review plus origin access tests from outside your network. I also check whether admin paths are accidentally cached or publicly accessible.

Fix path: put static assets behind cache rules with long TTLs where safe. Lock down origin access so only Cloudflare can reach it if your host supports that pattern. Add WAF rules for obvious junk traffic if forms are being targeted.

6) Monitoring will tell you before customers do

Signal: uptime checks hit both homepage and key conversion paths every few minutes. Alerts go to email plus one real-time channel like Slack or SMS.

Tool or method: UptimeRobot, Better Stack, Pingdom, or similar monitoring plus a manual failure simulation during setup. I confirm alert routing by forcing one test outage event.

Fix path: monitor homepage availability first, then form submit endpoint if applicable. Set alert thresholds so you know about repeated failures within 5 minutes instead of after a day of lost traffic.

Red Flags That Need a Senior Engineer

1. You have deployed through Lovable, Bolt Cursor output churned into production code without any security review. That usually means there may be hidden assumptions in auth flows, env handling, or third-party scripts that need proper inspection.

2. Your landing page includes forms connected to email marketing tools but nobody knows where secrets live. This creates real risk of API abuse or data leakage if keys are inside client-side code.

3. You changed domains recently but old URLs still work in some places. Broken canonical routing hurts SEO and can split analytics while confusing customers during checkout handoff.

4. Your app review depends on emails being delivered reliably. If SPF/DKIM/DMARC are wrong now, you can lose leads immediately while thinking the funnel is working.

5. You cannot explain how rollback works if deployment fails. That is not DIY territory anymore; that is launch risk.

DIY Fixes You Can Do Today

1. Check your live site in an incognito browser on mobile data. Look for certificate warnings, broken images over HTTP URLs , slow loading sections ,and forms that fail silently .

2. Search your repo for obvious secrets. Remove anything that looks like an API key from frontend files immediately , then rotate it if it was ever committed .

3. Set one canonical domain. Decide whether www or non-www wins , then make every other version redirect there with 301s .

4. Turn on email authentication basics. Confirm SPF , DKIM ,and DMARC exist before sending any launch emails from your domain .

5. Add uptime monitoring now . Even a simple free checker is better than nothing because downtime during launch ads wastes money fast .

A practical starter config looks like this:

example.com TXT "v=spf1 include:_spf.google.com include:sendgrid.net -all"
_dmarc.example.com TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com"

That snippet is not enough by itself ,but it shows the shape of what good looks like . You still need DKIM signing turned on in the actual sending service .

Where Cyprian Takes Over

When these checks fail , Launch Ready covers the exact cleanup needed to get you out of risk mode fast .

• DNS mistakes -> fixed as part of domain setup , redirects , subdomains ,and canonical routing .
• SSL issues -> handled through deployment hardening , certificate setup ,and browser-safe HTTPS enforcement .
• Email deliverability problems -> handled through SPF/DKIM/DMARC configuration .
• Secret leaks -> handled through environment variable cleanup , secret rotation ,and production-safe deployment patterns .
• Performance bottlenecks -> handled through Cloudflare caching , asset optimization ,and safer delivery settings .
• Attack surface issues -> handled through DDoS protection , bot filtering ,and tighter public exposure controls .
• No monitoring -> handled through uptime monitoring setup plus handover documentation .

That matters because founders do not need open-ended consulting when they need the site live safely before app review or campaign spend starts .

My delivery sequence would be:

1. Audit current state within hours 0 to 6. 2. Fix DNS ,SSL ,email auth ,and secret handling within hours 6 to 24. 3. Deploy production build ,enable Cloudflare protections ,and verify monitoring within hours 24 to 36. 4. Run handover checks ,document owner steps ,and confirm launch readiness within hours 36 to 48 .

If I will not get the site to pass basic security and delivery checks inside that window ,I would tell you exactly why before more traffic goes live . That saves ad spend ,support load ,and avoidable embarrassment during review .

References

• https://roadmap.sh/api-security-best-practices
• https://roadmap.sh/cyber-security
• https://roadmap.sh/frontend-performance-best-practices
• https://developers.cloudflare.com/ssl/
• https://dmarc.org/overview/

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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.*