Brute Force Attacks are performed to discover or crack login credentials. As you may know, personal systems, servers, applications, databases, network devices and other platform access is protected with the help of static username and password. For the purposes of data theft, vandalism, or the distribution of malware It is required for attackers to gain access to your systems, applications & database. Hence they perform or launch brute force attacks on the target system. Brute force attacks can flood servers with traffic, resulting in significant performance issues for the site under attack. There are various free and paid software tools available on the internet to conduct brute force attacks.
One can take measures like CAPTCHA program, instating rules requiring the use of strong passwords, introducing a delay between log-in attempts and use multi-factor authentication to prevent these automated attacks.