Using single-factor authentication
If you’re only using single-factor authentication for an account, you might want to check your settings to see if you can change this to multi-factor authentication. Multi-factor authentication requests two or more pieces of information to prove that you are the real owner of the account. The first factor is usually your password to the account. Factors after that could be anything from entering a code sent to a different device, verification email, to biometrics and more.
Using default passwords
If you’re using a password that everyone knows, a fixed, or default one, this could make you more vulnerable to an attack. Cybercriminals love default or simple passwords, because there is a much higher chance of guessing the right one to compromise accounts.
Using passwords from breached accounts
If you’ve had an account hacked, make sure don’t use that password again. If you were currently already using that password on another account, make sure to change that as soon as possible to avoid another account becoming compromised.
Using unsupported or end-of-life software
Unsupported or end-of-life software is no longer receiving security updates. This means that any bugs or vulnerabilities found in the software can be exploited by cyber criminals for their gain. Since these vulnerabilities are never patched, this unsupported or end-of-life software is unsafe to use.