What are Login Bypass Techniques?

Login bypass techniques are methods used by attackers to gain unauthorized access to a system or network by circumventing the authentication process. These techniques exploit vulnerabilities in the login mechanism, such as weak or default passwords, insecure password recovery mechanisms, and insecure application logic.

Login Bypass Techniques Example

Here is a simple example of a login bypass technique:

             // SQL Injection in login form
             Username: admin' --
             Password: any
             

In this example, the attacker uses a SQL injection in the username field to comment out the password check, allowing them to log in as the 'admin' user without knowing the password.

Prevention

Preventing login bypass attacks involves proper input validation, secure password handling, and secure application logic. This includes:

• Input validation: Validate user input by only accepting expected values.
• Secure password handling: Store passwords securely using strong hashing algorithms and salt.
• Secure application logic: Ensure that the application logic does not allow unauthorized access.