Is there any research into whether/how people save username/password combinations?

1. Is it a good idea to pass username and password in get?
2. How do usernames and passwords protect data?
3. How do username and password matching take place?
4. Why is a password and username important?

Is it a good idea to pass username and password in get?

Yes, it is bad practice. Any security advantage available by having a secret field name could also be gained by prepending that secret on to the password.

How do usernames and passwords protect data?

Your password is your authentication. Password authentication relies on a secret value that is known only to you. So if a website used only your username, then anyone who knew your email address, for instance, could log in to any of your online accounts, including your bank, email, Facebook or Amazon accounts.

How do username and password matching take place?

Once they submit their credentials through the login form, you'll search your database for the username they're signing in with. If you get a match, then you check the hashed password that they typed in with the hashed password stored in your database.

Why is a password and username important?

Passwords provide the first line of defense against unauthorized access to your computer and personal information. The stronger your password, the more protected your computer will be from hackers and malicious software. You should maintain strong passwords for all accounts on your computer.