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⚡ AI Lessons

Dev.to · authagonal
🔐 Cybersecurity
⚡ AI Lesson
18h ago
Your password-reset form is a free email cannon
An unauthenticated password-reset endpoint with no per-email rate limit is not just your problem. Point it at someone else's inbox and you have turned their res

Dev.to · authagonal
📋 Product Management
⚡ AI Lesson
2d ago
We gave away every feature on the free tier, including the ones rivals reserve for enterprise
Most auth vendors fence SSO, SCIM, MFA, and audit logs behind an Enterprise plan. We put all of them on the $0 tier. Here is the unit economics that makes givin

Dev.to · authagonal
⚡ AI Lesson
3d ago
An identity provider told us who you were, and we believed it
Single sign-on means trusting the identity provider. We trusted it for one thing too many: we resolved returning federated users by the email in the assertion,

Dev.to · authagonal
⚡ AI Lesson
4d ago
El scale-to-zero no sabe contar hasta uno
Azure Container Apps prometía que dejáramos de pagar por un clúster de autenticación inactivo. Calculamos el coste de la migración y la descartamos, no por el p

Dev.to · authagonal
🔐 Cybersecurity
⚡ AI Lesson
4d ago
Scale-to-zero can't count to one
Azure Container Apps promised to stop us paying for an idle auth cluster. We costed the migration and killed it, not over price or cold starts, but because serv

Dev.to · authagonal
🔧 Backend Engineering
⚡ AI Lesson
1w ago
Build vs buy auth: the bill you don't see coming
Login is a weekend. The bill arrives after: signature verification, SCIM deprovisioning, MFA, audit logs, key rotation, breach liability, and on-call for a tier

Dev.to · authagonal
🔐 Cybersecurity
⚡ AI Lesson
1w ago
One hyphen, two tenants, one signing key
Two of our tenants were the same tenant. They had different names, different signups, and different...

Dev.to · authagonal
⚡ AI Lesson
2w ago
Green unit tests don't mean you can go live
We sell authentication, which makes our scariest question a simple one: when a customer wires their...

Dev.to · authagonal
🔧 Backend Engineering
⚡ AI Lesson
2w ago
We log into our own admin console with our own SAML. Here's what it caught.
There's a version of dogfooding that's a slogan, and a version where your own employees can't ship...

Dev.to · authagonal
☁️ DevOps & Cloud
⚡ AI Lesson
2w ago
Take your Terraform state off the public internet (without standing up a VPN)
Your Terraform state file is the single most sensitive artifact in your cloud. It is a complete map...
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