Emerald Red Team

ERT-CONFIG-017

Cookies without Secure flag

LowA02:2025CWE-614

Why it matters

Security headers, TLS, email spoofing, takeovers. This check looks specifically for: cookies without secure flag.

How to fix it

Set Secure, HttpOnly and SameSite=Lax on cookies.

How we test it

Passive — runs in the free check, looks only at what a browser can see.

Does your app have this problem?

The free Quick Check tests for it.

Scan my app — free