Limiting login attempts is a crucial security measure to protect WordPress sites from brute force attacks, where attackers attempt to gain access by guessing passwords. By restricting the number of failed login attempts, site owners can effectively thwart these attacks, preventing unauthorized access. This can be achieved through the use of security plugins that offer the functionality to limit login attempts. Plugins like Wordfence, iThemes Security, and Login LockDown allow site owners to set a maximum number of failed attempts before locking out the user or IP address for a specified period. Configuring these settings helps to significantly reduce the risk of brute force attacks, enhancing the site’s overall security.