Why is it preferable to use the HTTP POST method instead of GET when working with sensitive information?

The GET method transmits data via the URL, making parameters visible in the browser address bar, server logs, and browser history. This is unsafe for sensitive information like passwords or personal data.

The POST method transmits data in the HTTP request body, hiding it from the URL and reducing the risk of accidental disclosure. Additionally, POST requests are usually not cached or stored in browser history.

Example: when submitting a form with a password, it is better to use POST so that the password does not appear in the URL.

POST /login HTTP/1.1
Host: example.com
Content-Type: application/x-www-form-urlencoded

username=user&password=secret