Launch Ready cyber security Checklist for paid acquisition funnel: Ready for handover to a small team in marketplace products?.

What "ready" means for a paid acquisition funnel in marketplace products

For a marketplace product, "launch ready" is not just "the site loads." It means paid traffic can land, convert, and hand off to a small team without exposing customer data, breaking attribution, or creating support chaos.

If I were self-assessing, I would want these outcomes before I call it ready:

• Domain and subdomains resolve correctly.
• SSL is valid everywhere, with no mixed content.
• Email authentication passes SPF, DKIM, and DMARC.
• Secrets are not in the repo, browser bundle, or logs.
• Cloudflare is in front of the app with basic DDoS protection and caching configured.
• Production deploys are repeatable and documented.
• Uptime monitoring is active and alerts reach a real person.
• Redirects preserve campaign tracking and do not create loops.
• The funnel works on mobile, since paid acquisition usually skews there.
• A small team can take over without needing tribal knowledge.

For this kind of handover, I would not accept "it works on my machine." I would accept "a new teammate can deploy it, monitor it, and recover it without guessing."

Launch Ready is built for exactly that gap.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | Domain setup | Primary domain and all required subdomains resolve correctly | Paid ads need stable landing paths | Broken links, lost clicks | | SSL everywhere | No mixed content; HTTPS valid on all pages | Trust and browser safety | Browser warnings, lower conversion | | Redirects | 301s are intentional and tested | Preserves SEO and ad attribution | Looping redirects, lost UTM data | | Cloudflare protection | WAF/basic DDoS rules enabled | Reduces abuse and bot noise | Downtime from spam or attacks | | Email auth | SPF, DKIM, DMARC all passing | Protects sender reputation | Emails land in spam or fail | | Secrets handling | Zero exposed secrets in code or client bundle | Prevents account takeover | Data leak, API abuse | | Deployment safety | Production deploy is documented and repeatable | Small teams need predictable releases | Broken releases, delayed launches | | Monitoring | Uptime checks plus alert routing live | You need fast failure detection | Silent outages during ad spend | | Caching/performance | LCP under 2.5s on mobile landing pages | Paid traffic converts worse when slow | Higher bounce rate, wasted spend | | Handover docs | Checklist covers domains, deploys, alerts, rollback | Team can operate without me later | Support load stays stuck on one person |

The Checks I Would Run First

1. Domain and redirect map Signal: the root domain loads cleanly, www/non-www behavior is consistent, campaign URLs do not break after redirecting.

Tool or method: I would test the live URLs in browser dev tools and with curl. I would check every redirect chain from ads-ready URLs to final landing pages.

Fix path: collapse redirect chains to one hop where possible. Make sure tracking parameters survive redirects. If there are multiple subdomains for marketplace flows like buyer., seller., app., or checkout., I would document each one explicitly.

2. SSL and mixed content Signal: every page returns HTTPS only, with no insecure images, scripts, fonts, or API calls.

Tool or method: browser console warnings plus a crawl of the funnel pages. I would also inspect network requests for any http:// assets.

Fix path: update hardcoded asset URLs to HTTPS or relative paths. Reissue certificates if needed. If Cloudflare is proxying traffic correctly but origin certs are weak or expired, fix origin trust before launch.

3. Email authentication Signal: SPF passes for your sending provider; DKIM signs outbound mail; DMARC policy is set and reports are coming through.

Tool or method: check DNS records against your email provider docs. Send a test message to Gmail and inspect authentication results.

Fix path: add the correct TXT records for SPF and DMARC. Turn on DKIM signing in the provider dashboard. Start DMARC at p=none if you are still testing deliverability, then move toward quarantine/reject once stable.

A minimal example looks like this:

v=spf1 include:_spf.google.com include:sendgrid.net ~all
v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com; adkim=s; aspf=s

4. Secrets exposure Signal: no API keys appear in Git history, frontend bundles, environment files committed to repo roots, logs, or screenshots shared with contractors.

Tool or method: search the repo for common secret patterns. Check build artifacts and browser source maps if they are public.

Fix path: rotate anything exposed immediately. Move secrets into environment variables or managed secret storage. Remove old keys from logs where possible. If a key was ever shipped client-side that should have been server-side only next to user data access risk goes up fast.

5. Cloudflare edge controls Signal: DNS is proxied where appropriate; caching rules make sense for static assets; basic WAF/DDoS protection is active.

Tool or method: review Cloudflare DNS records plus security events. Test whether static assets are cached while HTML remains dynamic where needed.

Fix path: enable proxying on public web assets unless there is a specific reason not to. Add cache rules for images/CSS/JS. Keep login/account routes out of aggressive caching. For marketplace products I usually keep buyer-facing public pages fast at the edge while protecting authenticated flows more carefully.

6. Monitoring and rollback readiness Signal: uptime monitoring exists for homepage plus key funnel endpoints; alerts go to Slack/email/SMS; rollback steps are written down.

Tool or method: trigger a harmless check failure in staging first. Verify who gets alerted within minutes.

Fix path: add at least one external uptime monitor per critical endpoint. Define one rollback command or deployment revert path that a small team can execute without asking the original builder.

Red Flags That Need a Senior Engineer

1. You cannot explain where secrets live today. That usually means hidden risk in codebases built quickly with AI tools or no-code wrappers.

2. Production deploys require manual clicking across multiple dashboards. This creates release errors when someone new takes over.

3. The app mixes frontend logic with privileged API calls. That can expose tokens or allow auth bypass if routes are miswired.

4. Redirects depend on undocumented rules inside hosting settings. This causes broken campaigns when domains change later.

5. There is no clear owner for monitoring alerts or incident response. Paid traffic will keep running while users hit errors unless someone sees it fast.

If any of those show up before launch day, I would stop trying to patch around them casually. That is when buying Launch Ready makes sense instead of spending another week guessing through settings panels.

DIY Fixes You Can Do Today

1. List every public URL used by ads. Include root domain, landing pages, checkout pages, login pages, help pages main subdomains maybe even email links if they matter for attribution.

2. Check DNS propagation with an external tool. Make sure A records CNAMEs MX records SPF DKIM DMARC values all match what your providers expect.

3. Turn on HTTPS enforcement at the edge. If your host supports it enable force SSL so nobody lands on an insecure version first.

4. Rotate any key you pasted into chat tools or screenshots. Assume anything shared outside your secret manager may be exposed already.

5. Add one uptime check right now. Even a basic monitor that pings your homepage every 5 minutes is better than nothing during paid spend.

Where Cyprian Takes Over

If you bring me a funnel with these failures:

• broken domain routing,
• missing SSL,
• weak email authentication,
• exposed secrets,
• unclear deployment process,
• no monitoring,
• messy redirects,

I handle the full production-safe handover inside the Launch Ready sprint window.

What you get in 48 hours:

• DNS cleanup for domain and subdomains
• Redirect mapping so campaign links behave predictably
• Cloudflare setup with SSL plus caching plus DDoS protection
• SPF/DKIM/DMARC configuration checks
• Production deployment review
• Environment variable and secrets cleanup
• Uptime monitoring setup
• Handover checklist for a small team

My recommendation is simple: do not let a paid acquisition funnel go live until the security basics are boring enough that another person can run it without me sitting beside them.

Delivery Map

References

• roadmap.sh - API Security Best Practices: https://roadmap.sh/api-security-best-practices
• roadmap.sh - Cyber Security Roadmap: https://roadmap.sh/cyber-security
• roadmap.sh - Code Review Best Practices: https://roadmap.sh/code-review-best-practices
• OWASP Cheat Sheet Series: https://cheatsheetseries.owasp.org/
• Cloudflare Security Docs: https://developers.cloudflare.com/waf/

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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.*