
Authentication Done Right
Session vs JWT vs OAuth - when to use what, and how to implement each securely.
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Session vs JWT vs OAuth - when to use what, and how to implement each securely.

XSS, CSRF, SQL injection - understand the attacks to prevent them.

Keep secrets out of code. Configure apps properly across environments.

Simple token authentication for SPAs and mobile apps.

Handle uploads properly - validation, storage, and serving files securely.

Protect your API from abuse without blocking legitimate users.

How JWTs work, when to use them, and common security mistakes.