Passwords are strings of characters used to access online services (e.g. your email or social networks profile).


1::I save all my different passwords in a file: when I need one, I can easily retrieve it.
3::I still prefer to use a different password each time.
1::I use the same password for each service that I use.

This is not correct; actually, you should not save your passwords in an (unencrypted) file as such a file may be accessed by other people. It is recommended to have a different password for each service, not saving them in any file. If you choose the same password for all your services, then in case that a malicious user manages to learn your password from one service, he/she will have access to all your accounts in all services. Furthermore, it is important to have strong passwords having adequate length (i.e. at least 8 characters) composed of both lower and upper case letters, as well as numbers and non-alphanumeric characters.

For more information, including ideas to choose strong passwords that you can remember, you may see here:

https://www.schneier.com/blog/archives/2014/03/choosing_secure_1.html

 

Having different passwords for each service, not saving them in any file, is the correct strategy for securing one’s own accounts. Indeed, if you choose the same password for all your services, then in case that a malicious user manages to learn your password from one service, he/she will have access to all your accounts in all services. Furthermore, it is important to have strong passwords having adequate length (i.e. at least 8 characters) composed of both lower and upper case letters, as well as numbers and non-alphanumeric characters.

For more information, including ideas to choose strong passwords that you can remember, you may see here:

https://www.schneier.com/blog/archives/2014/03/choosing_secure_1.html

 

Always using the same password is a weak strategy even if this makes it easy to remember. If a malicious user knows or can get to know your password, he/she could then have access to all of your accounts. It is recommended to have a different password for each service, not saving them in any file. Furthermore, it is important to have strong passwords having adequate length (i.e. at least 8 characters) composed of both lower and upper case letters, as well as numbers and non-alphanumeric characters.

For more information, including ideas to choose strong passwords that you can remember, you may see here:

https://www.schneier.com/blog/archives/2014/03/choosing_secure_1.html

 


However they also help to prevent other people from accessing your personal accounts. Unfortunately, because we use so many services, it is difficult to remember each password that we have.

In this situation, what could be a good strategy?