4 posts tagged with "Security"

Why you need a secure trigger​

Day 12: You build a protected frontend

Today: We build the secure backend that triggers calls

Here's the critical security issue:

Remember your ALB endpoint we built on Day 9 ↗?

https://ai-caller.yourdomain.com

If we add a /make-call endpoint directly to Fargate:

POST https://ai-caller.yourdomain.com/make-call
→ Publicly accessible
→ Anyone can trigger calls
→ Could rack up *huge* OpenAI/Twilio bills
→ Even with frontend auth, the endpoint is exposed

This is not acceptable.

Make it secure​

Day 10: You got a custom domain

Today: We make it secure with HTTPS

Here's the situation:

Your app is accessible at:

http://ai-caller.yourdomain.com

Browser says: ⚠️ "Not secure":

The problem:
❌ Data transmitted in plain text
❌ Anyone can intercept traffic
❌ Users don't trust it
❌ Browser shows scary warnings
❌ Can't use modern web features (WebRTC, microphone access)

What you need:

Your network needs smart locks​

Day 6: You built the roads (route tables)

Today: We add the smart locks (Security Groups)

Here's the problem:

But there's NO security layer yet.

Right now:

• Anyone can try to connect to your containers
• No firewall rules
• No access control

That's a security issue.

Solution: Security Groups

Your back yard needs an exit​

Day 4: You divided your VPC into front yards (public) and back yards (private)

Today: We build the back gate (NAT Gateway)