Your Product Hunt Launch Brings Traffic. It Also Brings Attackers.
You've been building for months. The landing page is polished. The demo video is perfect. You've lined up hunters, prepped your maker comment, and scheduled tweets. Launch day on Product Hunt is tomorrow.
But have you thought about what happens when 10,000 people hit your app in 24 hours -- including people whose first instinct is to open DevTools and poke at your API?
Product Hunt launches create a unique security situation. You go from 50 daily users to thousands in hours. Your app is suddenly visible to security researchers, curious hackers, competitors, and the occasional bad actor. They'll view your page source, inspect your network requests, test your API endpoints, and check your headers.
This is different from our general pre-launch security checklist -- this one is specifically about what matters for a Product Hunt launch, prioritized by what attackers are most likely to find and exploit during a traffic spike.
Priority 1: Things That Will Get You Publicly Called Out
These are the vulnerabilities that security-minded PH users will find within minutes and potentially comment about publicly. Fix these first.
SSL/TLS Certificate Is Valid and Properly Configured
Check: Visit your app in Chrome. Click the padlock icon. Verify the certificate is valid, not expired, and covers your exact domain (including www if you use it).
Why it matters for PH: A broken or expired SSL certificate shows a full-page browser warning. If even one PH visitor sees that warning, expect a comment about it. Browsers are aggressive about warning users -- an expired cert will literally stop people from accessing your app.
Quick fix: Most hosting providers (Vercel, Netlify, Lovable, Railway) handle SSL automatically. If you're using a custom domain, make sure the certificate has been provisioned. Check by running: curl -vI https://yourdomain.com 2>&1 | grep "SSL certificate".
No API Keys Exposed in Frontend Bundle
Check: View your page source and search for sk_, api_key, secret, and PRIVATE. Check your JavaScript bundle for anything that looks like an API key that isn't meant to be public.
Why it matters for PH: This is the first thing security researchers check. If your Stripe secret key, OpenAI API key, or database service role key is in your frontend code, someone will find it. They might use it, or they might just screenshot it and post it.
Quick fix: Move all private keys to environment variables on the server side. Use Edge Functions for any operation that requires a private key. The only key that's safe in the frontend is your Supabase anon key (with proper RLS) and Stripe's publishable key.
Privacy Policy Exists and Is Linked
Check: Navigate to your app. Is there a link to a privacy policy in the footer? Does the page actually load with real content?
Why it matters for PH: GDPR-aware European users expect this. If your app collects emails (even for waitlists), you need a privacy policy. Some PH users will specifically check for this.
Quick fix: Generate a privacy policy using a template generator. Add it to your site at /privacy. Link it in your footer. This takes 15 minutes.
Priority 2: Things That Will Get Exploited During Traffic Spikes
These vulnerabilities become dangerous specifically because a PH launch brings high traffic.
Rate Limiting on Signup and Login
Check: Try signing up 10 times in a row with different emails. Try logging in with wrong passwords 20 times. Does anything stop you?
Why it matters for PH: A PH launch attracts attention, and some of that attention is from people who will try to spam your signup form with bots. Without rate limiting, they can create thousands of fake accounts, flooding your database and potentially costing you money if you're sending welcome emails through a paid provider.
Quick fix: If you're using Supabase Auth, it has some built-in rate limiting. But add your own rate limiting on any custom auth endpoints. For Lovable/Supabase apps, implement rate limiting in your Edge Functions.
Database Access Controls (RLS)
Check: Open your browser console and try querying your database tables directly using the Supabase client. Can you read data from other users? Can you insert arbitrary records?
Why it matters for PH: If your app uses Supabase and your RLS policies are incomplete, anyone who finds your anon key (it's in the JavaScript bundle) can query your database. During a PH launch, you might get dozens of users who are technically sophisticated enough to try this.
Quick fix: Enable RLS on every table. Add policies that restrict access to the authenticated user's own data. Test by querying from the browser console while logged in as different users.
Error Messages Don't Leak Information
Check: Trigger various errors in your app -- bad API calls, invalid inputs, accessing pages that don't exist. Do the error messages expose stack traces, database queries, file paths, or internal server details?
Why it matters for PH: Verbose error messages during a traffic spike are a goldmine for attackers. A stack trace might reveal your framework version (and its known vulnerabilities), your database structure, or your file system layout.
Quick fix: Add global error handling that returns generic error messages in production. Log detailed errors server-side but never send them to the client. In React: use an Error Boundary. In Edge Functions: wrap everything in try/catch with generic error responses.
Priority 3: Things That Determine Your Long-Term Security Posture
These won't get you called out on PH day, but they matter for the weeks and months after, when you have real users with real data.
HTTP Security Headers Are Present
Check: Open DevTools, go to Network tab, click on your main page request, and check the Response Headers. Look for: Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Permissions-Policy, and Referrer-Policy.
Why it matters: These headers are your first line of defense against XSS, clickjacking, and MIME sniffing attacks. They take minutes to add and provide significant protection. ClearAudit specifically checks for all of these.
Quick fix: Add a _headers file or configure your hosting provider. Most headers are single-line additions. See our complete guide to security headers for exact configurations.
DNS Security Records (SPF/DKIM/DMARC)
Check: Run a DNS lookup on your domain and check for TXT records containing SPF, DKIM, and DMARC policies.
Why it matters: After a successful PH launch, your domain gets attention. If you don't have email authentication records, attackers can send phishing emails that appear to come from your domain. "Congrats on your PH launch! Verify your account here..." sent from your domain to your new users.
Quick fix: Add these DNS records at your domain registrar. The exact records depend on your email provider. ClearAudit's scan checks for these and generates the specific records you need.
Cookie Security Flags
Check: Open DevTools, go to Application > Cookies. Check that all cookies have Secure, HttpOnly, and SameSite flags set.
Why it matters: Without these flags, cookies can be intercepted over HTTP, accessed by JavaScript (enabling XSS to steal sessions), or sent in cross-site requests (enabling CSRF attacks).
Quick fix: Set cookie flags in your auth configuration. For Supabase Auth, the cookie configuration can be set in the client initialization.
Monitoring and Alerting
Check: Do you have any error tracking or monitoring set up? Will you know if your app goes down during the PH launch? Will you know if someone is making thousands of API requests per minute?
Why it matters: You need to be aware of what's happening during and after your launch. If an attacker finds a vulnerability and starts exploiting it, you need to know immediately -- not three days later when a user complains.
Quick fix: Add a basic error tracking service (Sentry, LogRocket, or similar). Set up uptime monitoring. Check your Supabase dashboard for unusual database activity.
The 30-Minute Pre-Launch Security Sprint
If your PH launch is tomorrow and you've done nothing on this list, here's what to fix in 30 minutes, in order of priority:
5 minutes: Check SSL certificate is valid. Fix if not.
5 minutes: Search frontend code for exposed API keys. Move any private keys to server-side.
5 minutes: Verify RLS is enabled on all Supabase tables. Enable it if not.
5 minutes: Add a privacy policy page with a basic template.
Or, do this instead:
Run ClearAudit's free scan. It takes 2 minutes and checks all 120+ items on this checklist (and more). You'll get a prioritized report showing exactly what to fix, plus an AI prompt that tells your coding tool how to fix each issue. Most founders fix everything in under an hour.
After the Launch
Your PH launch is the beginning, not the end. Once you have real users and real data, security becomes an ongoing responsibility:
Run a security scan monthly to catch configuration drift
Monitor your error logs for unusual patterns
Review RLS policies whenever you add new database tables
Update dependencies regularly to patch known vulnerabilities
Set up the ClearAudit trust badge on your site to show users you take security seriously
Good luck with your launch. Ship fast, but ship secure.
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