Authentication is an integral part of any web application. Most of the web app we use today have some sort of authentication mechanism. Its purpose is to verify the user’s identity and grant or deny the access and privileges of the application.
However, if there is any flaw in it, the hacker can bypass the authentication and break the security. Generally, this type of attacks occurs due to improper implementation of authentication and session management such as:
– Authentication credentials are not secured or unencrypted.
– Credentials such as passwords and session IDs being sent over unencrypted connections
– No session timeout
– Validating the session value even after logout.
How to prevent web authentication from hackers?
1. Password length and complexity: Password length and complexity It’s quite a common practice these days to have a password with alphanumeric characters consisting of letters, numbers, symbols, and punctuations. Also, the recommended minimum length of the password is set to be at least eight-ten characters. All this complexity makes the password harder to guess.
2. Brute force attack protection: A brute force attack is used by hackers to crack the passwords by the trial-and-error method. Thus, in order to prevent those types of attacks, the accounts are disabled temporarily on a number of invalid login attempts.
3. Encryption of credentials: The authentication credentials such as passwords and session IDs should be properly encrypted when stored. Also, the credential must not be sent over unencrypted connections