This is a feature called "Remember Me" or "Stay Logged In" that is commonly used by websites. It allows you to stay logged in for a certain period of time, usually 30 days, without having to re-enter your login information every time you visit the site. This feature can be turned off in your account settings if you do not want your name and password to automatically appear.
If you are using a personal device and have not shared your login information with anyone, it is unlikely that anyone else will be able to access your account. However, if you are using a shared device or a public computer, it is important to log out of your account to prevent others from accessing it.
You can change your login information by going to your account settings and selecting the option to change your password. This will prompt you to enter your current password and then create a new one. It is important to regularly change your login information for security purposes.
The "Remember Me" feature is generally safe to use, as long as you are using a secure and trusted website. However, it is important to keep in mind that if someone gains access to your device, they may also be able to access your account if it is set to automatically log in. It is always a good idea to use strong and unique passwords for your accounts.
The process for turning off the "Remember Me" feature may vary depending on the website. However, it is typically found in your account settings or under the login form. Look for an option to disable or turn off the feature. If you are unable to find it, you can contact the website's customer support for assistance.