The purpose of this blog is to demonstrate how to brute force a login page using Burp Suite. There are other brute force tools such as Hydra and Ncrack. Although both are great tools, Burp Suite is more suitable for brute forcing a web application login page, whereas Hydra and Ncrack are more suitable for other protocols such as SSH and RDP.
Offline Password Cracking is an attempt to recover one or more passwords from a password storage file that has been recovered from a target system. Typically, this would be the Security Account Manager (SAM) file on Windows, or the /etc/shadow file on Linux. In most cases, Offline Password Cracking will require that an attacker has already attained administrator / root level privileges on the system to get to the storage mechanism.
Online password cracking has advantages and disadvantages. It is effective if executed properly. There are numerous defenses to prevent attackers from cracking your passwords.
Most of us are brainwashed about what constitutes a secure or "strong" password. We often think a password that consists of 8 characters with complexity requirements (uppercase, lowercase, number, special character) is more secure than a "passphase" with no complexity requirements. This is not true.