What feature can you use for increasing the level of login protection for end user...

 A security policy is a set of rules and guidelines that define the security requirements for your organization. It specifies the password policy, the session timeout, the login attempts, the IP address restrictions, and the two-factor authentication settings for your end users. By configuring these settings, you can increase the level of login protection for end user passwords and prevent unauthorized access to your SAP Service Cloud Version 2 solution. References = Security Guide for SAP Service Cloud Version 2, Setting Up Employees for Service