Launch Ready cyber security Checklist for automation-heavy service business: Ready for production traffic in marketplace products?.

What "ready" means for an automation-heavy marketplace product

For this kind of product, "ready" does not mean "it loads on my laptop." It means a stranger can hit production traffic, sign up, trigger automations, and trust the system without exposing customer data, breaking email delivery, or creating support chaos.

I would call it ready only if these are true:

• Domain points to the correct app and all old URLs redirect cleanly.
• Email is authenticated with SPF, DKIM, and DMARC passing.
• Cloudflare is in front of the app with SSL enforced and basic DDoS protection enabled.
• Production secrets are not in code, chats, or frontend bundles.
• Critical user flows work under real traffic: signup, login, marketplace browse, checkout or booking, automation trigger, notification delivery.
• Monitoring exists for uptime, errors, and failed jobs.
• No critical auth bypasses, no exposed admin endpoints, and no open webhooks that accept junk payloads.
• The app can handle failure without losing data or sending duplicate automations.

If your product is a marketplace with automation behind the scenes, the security risk is not just hackers. The bigger business risk is broken onboarding, failed email delivery, duplicate workflow runs, lost orders, and support tickets piling up after launch.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | |---|---|---|---| | DNS setup | Root domain and subdomains resolve correctly in under 5 minutes after change | Users and email providers must find the right services | Broken site access, email misrouting | | SSL enforcement | HTTPS only, no mixed content, valid cert on all domains | Protects login and payment traffic | Browser warnings, failed logins | | Redirects | Old URLs 301 to new URLs with no loops | Preserves SEO and user paths | Lost traffic, dead links | | Email auth | SPF, DKIM, DMARC all pass at p=none or stricter | Prevents spoofing and improves deliverability | Emails land in spam or get rejected | | Secrets handling | Zero secrets in frontend code or public repos | Stops credential leaks | Account takeover, API abuse | | Auth checks | No critical auth bypasses; role checks enforced server-side | Marketplace data must stay private | Data leaks between users | | Webhook safety | Signed webhooks validated and replay-safe | Automation systems receive hostile traffic first | Duplicate actions, forged events | | Rate limits | Login, signup, webhook endpoints rate-limited | Reduces brute force and abuse | Outages from bot traffic | | Monitoring | Uptime alerts plus error alerts plus job failure alerts live | You need to know before customers do | Silent downtime and missed automations | | Performance baseline | p95 API under 500ms for core actions; LCP under 2.5s on mobile | Traffic conversion depends on speed and stability | Drop-off, lower conversion, ad waste |

The Checks I Would Run First

1. Domain and redirect integrity

Signal: the primary domain loads over HTTPS and every old path lands on one intended destination with a 301 redirect. I also check subdomains like app., api., mail., and admin. separately so nothing points to stale infrastructure.

Tool or method: `dig`, browser tests, Cloudflare dashboard, and a quick crawl with Screaming Frog or Sitebulb. I test root domain changes from an incognito browser and verify there are no redirect chains longer than one hop.

Fix path: set the canonical domain in Cloudflare and your app config first. Then map redirects intentionally: old marketing pages to new ones, old app routes to new routes, and any dead route to the nearest relevant page.

2. Email authentication and deliverability

Signal: SPF passes for your sender provider; DKIM signs every outbound message; DMARC aligns with your From domain. If you send transactional email from a marketplace product and these are wrong, your onboarding emails will disappear into spam.

Tool or method: MXToolbox checks plus inbox testing with Gmail and Outlook. I also inspect bounce logs because "sent" does not mean "delivered."

Fix path: publish one SPF record only if possible by flattening vendors carefully. Enable DKIM in your mail provider. Start DMARC at `p=none`, then move to `quarantine` once alignment is stable.

v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com; adkim=s; aspf=s

3. Secret exposure review

Signal: no API keys in frontend bundles, no `.env` values committed to GitHub, no tokens printed in logs or error pages. For automation-heavy products this is non-negotiable because one leaked webhook key can trigger real-world side effects.

Tool or method: search the repo for `sk_`, `pk_`, `secret`, `token`, `webhook`, then scan build artifacts and deployed JS bundles. I also check CI variables and deployment platform settings for public exposure.

Fix path: move all sensitive values server-side only. Rotate anything that may have been exposed already. Add secret scanning in CI so this becomes a blocked deploy instead of a postmortem.

4. Authz on marketplace data boundaries

Signal: users can only see their own listings, orders, messages, automations, billing records, and logs. A logged-in user should never be able to change an ID in a URL or request body and access another tenant's data.

Tool or method: manual ID swapping tests plus automated authorization tests against APIs. I look at every endpoint that accepts an object ID or tenant ID.

Fix path: enforce authorization on the server for every read/write action. Do not trust client-side filters. Add row-level scoping at query time where possible.

5. Webhook safety for automation flows

Signal: incoming webhook requests are signed, timestamped if supported, validated against schema rules, and rejected if replayed or malformed. This matters because automation products often connect to external tools that can be noisy or hostile.

Tool or method: Postman collections plus replay tests plus signature validation review. I send bad payloads on purpose to see whether the system fails closed.

Fix path: verify signatures before processing any job. Queue work instead of doing it inline when possible. Store event IDs so duplicates do not create double charges or duplicate emails.

6. Monitoring for uptime plus failed jobs

Signal: you get alerts when the site goes down and when background jobs fail and when auth errors spike. For production traffic readiness I want alerting within 5 minutes max so issues are caught before they snowball into support load.

Tool or method: UptimeRobot or Better Stack for availability; Sentry for exceptions; queue dashboard metrics for automation failures; log sampling for spikes in 401/403/500 responses.

Fix path: set separate alerts by severity. A single checkout failure should page differently from a total outage. Add a simple incident checklist so whoever is on call knows what to check first.

Red Flags That Need a Senior Engineer

1. You have multiple vendors sending email from different domains but no clear SPF strategy. That usually turns into broken deliverability after launch week one.

2. Your marketplace uses role-based access but permissions are checked only in React. That is how private records leak when someone edits a request directly.

3. Webhooks trigger payments, bookings, account creation, or message sends without signature verification. One forged request can create real financial damage fast.

4. Secrets live in frontend environment variables because "the app needs them at build time." If those values can be read by users' browsers too much has already been exposed.

5. There is no monitoring owner. If nobody gets paged when auth fails or jobs stall then production traffic becomes guesswork.

DIY Fixes You Can Do Today

1. Turn on Cloudflare proxying for public web assets. This gives you basic TLS termination visibility plus caching plus DDoS shielding before launch traffic hits raw origin servers.

2. Audit your DNS records line by line. Remove stale A records CNAME chains that point nowhere old MX entries you no longer use.

3. Test your signup flow from Gmail Outlook iPhone Safari Chrome incognito mode. If any step feels confusing fix that before spending more on ads or outreach.

4. Rotate any secret that was ever pasted into chat screenshots issue trackers or shared docs. Assume copied secrets are compromised until proven otherwise.

5. Set up three alerts today:

• homepage down
• auth errors above normal
• background job failures

Even simple alerts beat finding out from angry customers at midnight.

Where Cyprian Takes Over

If your checklist shows gaps in any of these areas I would take over the full launch hardening sprint rather than let you patch it piecemeal:

| Failure area | Service deliverable in Launch Ready | Timeline | |---|---|---| | DNS confusion or broken redirects | DNS cleanup redirects subdomains canonical routing | First 4 hours | | Missing SSL / weak edge protection | Cloudflare setup SSL enforcement caching DDoS protection | First 8 hours | | Email not trusted by inbox providers | SPF DKIM DMARC configuration testing validation handover notes | First 12 hours | | Secrets exposed or poorly managed | Environment variable audit secret rotation deployment hardening | First 16 hours | | Production deploy unstable | Production deployment verification rollback plan smoke tests | First 24 hours | | No monitoring / blind spots | Uptime monitoring error tracking alert routing dashboard setup | First 32 hours | | Handover missing clarity | Launch checklist runbook ownership list next-step fixes report | By hour 48 |

My recommendation is simple: if you have production traffic coming from ads partners SEO marketplaces or outbound sales do not DIY the last mile unless you already know how to verify auth boundaries secrets handling email deliverability and rollback safety together.

• confirm what is safe to launch,
• fix what blocks production traffic,
• document what still needs follow-up,
• hand back a system you can actually monitor.

Delivery Map

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
• Cloudflare SSL/TLS documentation - https://developers.cloudflare.com/ssl/
• Google Postmaster Tools - https://support.google.com/mail/answer/9981691

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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.*