Most browsers automatically fill the content of input elements of type 'password' when this password has already been provided in the past.

Imagine that user B takes control of a machine belonging to a user A. Accessing a secured web site as user A is trivial for user B if form input elements are automatically filled in by the browser on the site's login page.

Noncompliant Code Example

For HTML5:

<input type="password" />

Compliant Solution

For HTML5:

<input type="password" autocomplete="off" />