Launch Ready cyber security Checklist for founder landing page: Ready for app review in bootstrapped SaaS?.

Launch Ready cyber security Checklist for founder landing page: Ready for app review in bootstrapped SaaS?

"Ready" means your founder landing page can survive public traffic, app review scrutiny, and basic hostile internet conditions without exposing customer data, breaking signup, or delaying launch.

For a bootstrapped SaaS, I would call it ready only if the page loads fast enough to convert, the domain and email are authenticated, the deployment is locked down, secrets are not exposed anywhere in the client or repo, and monitoring will tell you when something breaks before a customer does. A practical bar is: LCP under 2.5s on mobile, zero exposed secrets, SPF/DKIM/DMARC passing, and no critical auth bypasses or broken redirects.

If you cannot answer "yes" to most of the checklist below, you are not ready for app review. You are still in pre-launch recovery mode.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | Domain ownership | Domain points to the correct production host and WHOIS/admin access is controlled | Prevents hijacks and launch delays | Users hit the wrong site or an attacker can redirect traffic | | HTTPS | SSL is valid on all public URLs with no mixed content | App review and trust depend on it | Browser warnings, failed logins, lower conversion | | Redirects | HTTP to HTTPS and non-canonical URLs redirect once only | Keeps SEO and signup flows clean | Broken links, loops, lost traffic | | DNS hygiene | DNS records are minimal and correct | Reduces misroutes and email failures | Downtime, spoofing risk, failed email delivery | | Email auth | SPF, DKIM, and DMARC all pass | Protects deliverability and brand reputation | Emails land in spam or get spoofed | | Secrets handling | No secrets in frontend code, repo history, or logs | Stops credential theft | API abuse, billing fraud, data exposure | | Cloudflare setup | WAF/DDoS protection enabled with sane rules | Blocks noisy attacks cheaply | Outages from bots and basic attacks | | Monitoring | Uptime checks alert within 5 minutes | You need fast detection after launch | You find outages from customers first | | Performance | Mobile LCP under 2.5s and CLS under 0.1 | App review and conversion both suffer when slow | Lower signups and higher bounce rate | | Handover readiness | Deployment steps documented with rollback path | Prevents single-person failure mode | You cannot safely ship fixes or recover fast |

The Checks I Would Run First

1. Domain and DNS control

Signal: I want to see who owns the domain registrar account, who controls DNS, and whether the apex domain plus www resolve to the intended production target.

Tool or method: Registrar dashboard check, `dig`, Cloudflare DNS panel, and a quick browser test for canonical URLs.

Fix path: Remove stale records, point only required A/AAAA/CNAME entries at production, lock registrar access with 2FA, and keep one canonical host. If there are multiple environments exposed publicly by mistake, I would shut them down or put them behind auth immediately.

2. SSL validity and redirect behavior

Signal: Every public URL should serve valid HTTPS with no certificate warnings, no mixed content errors, and exactly one redirect from HTTP to HTTPS.

Tool or method: Browser devtools console, SSL Labs test, curl header inspection.

Fix path: Issue a proper certificate through Cloudflare or your host, force HTTPS at the edge or origin once only, then scan for hardcoded `http://` assets in scripts or CSS. Mixed content often looks minor but it kills trust during review.

3. Secrets exposure audit

Signal: No API keys, private tokens, webhook secrets, or service credentials should exist in frontend bundles, Git history that is still reachable by collaborators, build logs, or error tracking events.

Tool or method: Repo search for common secret patterns, bundle inspection in browser devtools, secret scanning tools such as GitHub secret scanning or TruffleHog.

Fix path: Move secrets to server-side environment variables only. Rotate anything that may have been exposed already. If a secret was ever committed publicly enough to be indexed by bots or scanners, I treat it as compromised even if "nobody used it."

4. Email authentication chain

Signal: SPF passes for your sending provider; DKIM signs outbound mail; DMARC policy exists with alignment working for your domain.

Tool or method: MXToolbox checks plus a real test email to Gmail and Outlook headers.

Fix path: Add the exact TXT records your provider requires. Start with `p=none` if you need visibility first; move toward `quarantine` after you confirm alignment. For bootstrapped SaaS launches that depend on invite emails or password resets this is not optional.

Example record pattern:

v=spf1 include:_spf.google.com include:sendgrid.net -all

5. Cloudflare protection baseline

Signal: The site should sit behind Cloudflare with DDoS protection on by default and only necessary ports/services exposed at origin.

Tool or method: Cloudflare dashboard review plus origin IP leak check.

Fix path: Hide origin IP where possible, enable WAF managed rules relevant to your stack, set sensible rate limits on login/contact endpoints if they exist on the landing flow, and block obvious bot abuse paths. If your origin is directly reachable without reasoned exceptions like health checks or admin tunnels then your attack surface is too large.

6. Monitoring and rollback readiness

Signal: You need uptime alerts plus at least one rollback path that works without heroics.

Tool or method: UptimeRobot/Pingdom/Cloudflare monitoring plus a dry-run deployment rollback test.

Fix path: Set alerts for homepage availability and critical form submission paths at minimum. Keep deployment notes short enough that another person can execute them in under 10 minutes if you disappear mid-launch.

Red Flags That Need a Senior Engineer

• You have found any exposed secret in source maps, frontend bundles, CI logs, pasted screenshots of config files sent by AI tools.
• Your app review depends on invite links or password reset emails that currently land in spam.
• The landing page uses third-party scripts you do not fully understand such as chat widgets that can read form fields.
• The site has more than one environment publicly accessible with shared credentials.
• You do not know whether Cloudflare is protecting the origin or just sitting in front of broken DNS.
• There is no documented rollback plan because "deployment has always worked so far."

If any of those are true I would not keep DIY-ing this. The cost of a bad launch here is not just embarrassment; it is support load from broken onboarding spam complaints from failed email delivery wasted ad spend from slow pages and possible customer data exposure.

DIY Fixes You Can Do Today

1. Turn on 2FA everywhere

Lock down registrar hosting Cloudflare email provider GitHub Figma Stripe and any admin tool connected to launch. Use an authenticator app rather than SMS where possible.

2. Audit your public files

Search your repo for `.env`, API keys webhook URLs private tokens service account JSON files analytics IDs hidden in comments and accidental test data. Delete what should never be public then rotate anything suspicious.

3. Verify all redirect paths

Test `http://domain.com`, `https://domain.com`, `http://www.domain.com`, `https://www.domain.com`, plus any old campaign URLs. Each should end up at one canonical destination with no loops and no extra hops beyond what is needed.

4. Check email headers

Send a test message from your domain to Gmail then inspect headers for SPF DKIM DMARC pass results. If any fail fix DNS before launch because failed authentication usually becomes deliverability pain later.

5. Remove unnecessary third-party scripts

Kill anything non-essential on the landing page until after launch day. Every extra script adds privacy risk performance drag failure points and sometimes hidden access to user input fields.

Where Cyprian Takes Over

This is where I step in when DIY stops being safe enough for a founder timeline.

• Domain DNS redirects subdomains -> included in Launch Ready
• Timeline: hour 1 to 8
• Outcome: clean canonical routing with production-only records
• Cloudflare SSL caching DDoS protection -> included in Launch Ready
• Timeline: hour 4 to 16
• Outcome: edge protection active valid certs safer caching settings
• SPF DKIM DMARC -> included in Launch Ready
• Timeline: hour 6 to 18
• Outcome: authenticated mail that can actually reach inboxes
• Production deployment environment variables secrets -> included in Launch Ready
• Timeline: hour 8 to 24
• Outcome: no secrets shipped client-side secure config handling
• Uptime monitoring handover checklist -> included in Launch Ready
• Timeline: hour 20 to 48
• Outcome: alerts rollback notes ownership transfer launch-safe handoff

My recommendation is simple: if you are within days of app review and any of the first six checks fail buy the sprint instead of stretching this across weekends.

References

• roadmap.sh code review best practices - https://roadmap.sh/code-review-best-practices
• roadmap.sh API security best practices - https://roadmap.sh/api-security-best-practices
• roadmap.sh cyber security - https://roadmap.sh/cyber-security
• OWASP Top Ten - https://owasp.org/www-project-top-ten/
• Cloudflare Learning Center on SSL/TLS - https://www.cloudflare.com/learning/ssl/what-is-ssl/

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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.*