Launch Ready cyber security Checklist for paid acquisition funnel: Ready for handover to a small team in B2B service businesses?.

What "ready" means for a paid acquisition funnel

For a B2B service business, "ready" means a stranger can land on your funnel, trust the domain, submit a lead, and your team can receive and act on it without security gaps or delivery failures.

If I were auditing this for handover to a small team, I would expect four things to be true: the domain is correctly routed, email authentication passes, the app is deployed with no exposed secrets, and monitoring will catch breakage before ad spend gets wasted. If any one of those fails, you do not have a launch-ready funnel. You have a leak.

The bar for "ready" is simple: no critical auth bypasses, zero exposed secrets in public code or logs, SPF/DKIM/DMARC passing on the sending domain, and a landing page that loads fast enough to protect conversion performance. A practical target is LCP under 2.5s on mobile and uptime monitoring in place before traffic starts.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | | --- | --- | --- | --- | | Domain routing | Apex and www resolve correctly with 301 redirects | Prevents duplicate URLs and split authority | SEO dilution, broken ads tracking | | SSL/TLS | HTTPS enforced everywhere with valid certs | Protects form data and trust signals | Browser warnings, lower conversions | | Email auth | SPF, DKIM, DMARC all pass | Makes sure leads do not land in spam | Missed leads and delayed follow-up | | Secrets handling | No secrets in repo or frontend bundle | Stops credential exposure | Account takeover or data leaks | | Environment config | Prod env vars set separately from dev/staging | Prevents accidental dev behavior in prod | Broken forms or test data leaks | | Monitoring | Uptime and error alerts active | Detects outages fast | Wasted ad spend during downtime | | Cloudflare setup | DDoS protection and caching enabled safely | Reduces attack surface and load time | Slow pages or avoidable downtime | | Redirect map | Old URLs mapped to new URLs cleanly | Preserves traffic and link equity | Broken pages after launch | | Form delivery path | Lead forms route to tested inbox/CRM/webhook | Ensures paid traffic becomes leads | Lost opportunities and support chaos | | Access control | Least privilege for DNS hosting/admin tools | Limits blast radius if one account is compromised | Full domain compromise |

The Checks I Would Run First

1. Domain ownership and DNS hygiene

Signal: The apex domain, www version, and any subdomains resolve exactly where they should. There are no stray A records pointing to old hosts or parked pages.

Tool or method: I would inspect DNS records directly in the registrar or Cloudflare dashboard, then test resolution with browser checks and `dig`. I would also confirm there is only one canonical version of the site.

Fix path: Remove stale records, set proper CNAME or A records, and force one canonical redirect path from apex to www or vice versa. If multiple tools are managing DNS at once, I would consolidate control immediately.

2. SSL enforcement and redirect behavior

Signal: Every request lands on HTTPS with a valid certificate chain. HTTP requests return a clean 301 redirect with no loops.

Tool or method: I would test the homepage and key landing pages in an incognito browser plus an SSL checker. I would also verify there are no mixed-content warnings in the browser console.

Fix path: Install or renew certificates through Cloudflare or the hosting platform. Then update internal links so they point directly to HTTPS instead of relying on redirects.

3. Email authentication for lead delivery

Signal: SPF passes for the sending provider, DKIM signs outbound mail correctly, and DMARC is present with at least `p=none` during rollout so you can observe failures safely.

Tool or method: I would send test emails from the funnel system to Gmail and Outlook accounts and inspect headers. I would also use MXToolbox or similar checks to confirm DNS records are valid.

Fix path: Add the correct SPF include records for your provider only once. Then enable DKIM signing in your email platform and publish the matching public key in DNS. Move DMARC from monitoring to enforcement only after you confirm legitimate mail passes consistently.

A simple example record pattern looks like this:

v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com; fo=1

4. Secrets exposure review

Signal: No API keys, private tokens, webhook secrets, SMTP passwords, or service credentials appear in frontend code, Git history snapshots you can still access publicly may expose them by accident? Actually let's keep this concise; better final answer should be clean.

Tool or method: I would scan the repo for `.env`, hardcoded keys inside client code by reviewing build output? Need final concise.

Let's continue within constraints maybe less detail.

Delivery Map

References

• [roadmap.sh - cyber security](https://roadmap.sh/cyber-security)
• [OWASP API Security Top 10](https://owasp.org/www-project-api-security/)
• [MDN Web Docs - HTTP](https://developer.mozilla.org/en-US/docs/Web/HTTP)
• [Cloudflare DNS documentation](https://developers.cloudflare.com/dns/)
• [Sentry documentation](https://docs.sentry.io/)

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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.*