Dictionary Attack is like a guessing game which is used to crack passwords.
The hackers use this method in order to get access to a system by guessing passwords. A program or a software is used in this method which contains all the possible common passwords that can be. The software tries every common password in order to get an unauthorised access. It is only useful against the users who use common passwords. There is another trick in this method. For this trick the hacker must have every single information about the user like name, birth date, any pet name, hobby, family member, career, etc. Then the hacker will input all the personal information into a script. The script will make a dictionary of every possible password using that information and will try to crack it. It is the most common and easy way to crack any password.