![]() Attempt to log in with the correct password.Attempt to log in with an incorrect password 5 times.Successfully log in with the correct password, thereby showing that the lockout mechanism doesn’t trigger after 4 incorrect authentication attempts.Attempt to log in with an incorrect password 4 times.Successfully log in with the correct password, thereby showing that the lockout mechanism doesn’t trigger after 3 incorrect authentication attempts.Attempt to log in with an incorrect password 3 times.To evaluate the account lockout mechanism’s ability to mitigate brute force password guessing, attempt an invalid log in by using the incorrect password a number of times, before using the correct password to verify that the account was locked out. If you have only one account with which you can log on to the web application, perform this test at the end of your test plan to avoid losing testing time by being locked out. To test the strength of lockout mechanisms, you will need access to an account that you are willing or can afford to lock. Evaluate the unlock mechanism’s resistance to unauthorized account unlocking.Evaluate the account lockout mechanism’s ability to mitigate brute force password guessing.Accounts are typically locked after 3 to 5 unsuccessful attempts and can only be unlocked after a predetermined period of time, via a self-service unlock mechanism, or intervention by an administrator.ĭespite it being easy to conduct brute force attacks, the result of a successful attack is dangerous as the attacker will have full access on the user account and with it all the functionality and services they have access to. Code guessing on any 2FA functionality or Security Questions.Īccount lockout mechanisms require a balance between protecting accounts from unauthorized access and protecting users from being denied authorized access.Login password or username guessing attack.Some of the attacks that can be defeated by using lockout mechanism: ![]() ![]() Home > Latest > 4-Web Application Security Testing > 04-Authentication Testing Testing for Weak Lock Out Mechanism IDĪccount lockout mechanisms are used to mitigate brute force attacks. ![]()
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