Ways of Which you can prevent brute force cracking:
* Adding to password complexity:
This will make any form of guessing/ using dictionary to crack a password take longer time and most times it will be unsuccessful. Some websites, for example, will require passwords of 8-16 characters, with at least one letter and number with special characters (such as .), as well as not allowing a user to have their name, username or ID in their password.
Login attempts:
it works it to keep user safe,it lock out a user for a given amount of time after exceeds amount of log in attempts in putting password/username.
Captchas:
These are the boxes with wrapped text/images asking the user what is in the box .It prevents robot from executing scripts using brute force attacks, while it's made easy for human to bypass.
Two-factor authentication (a multi-factor authentication):
It's a primary form of authentication. Two-factor security requires two forms of authentication (example, to sign in to Blockchain, users need to put in their Email ID and Password. ID will be sent to you mail for the user,the user will input it before they log him/her in(it's use to marked trusted User).
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