The Settings menu in the platform is where you configure a variety of settings including basic account settings, and security settings that control user and application-level access to your account. The Security page allows you to configure settings related to your general security, user password settings, and content security policy. The general security settings that you configure control the security of the browser application itself, such as whether the application can be included in an iframe — such as within the application’s integration with Salesforce.
The user password settings control whether passwords expire, and the strength required for passwords.