The single biggest upgrade you can make to your digital security is unique passwords for every account, plus multi-factor authentication on the important ones.
Use a password manager
Built-in managers (iCloud Keychain, Google Password Manager, Windows/Edge) generate and store unique strong passwords so you never reuse one.
- Never reuse a password across services.
- Let your password manager generate them.
- Lock your device + manager with MFA.
Turn on multi-factor authentication
MFA adds a second factor (an app code, a hardware key) so a stolen password alone isn't enough.
- Prefer an authenticator app over SMS codes.
- Save backup codes in a safe place.
- Keep recovery email & phone up to date.