Security glossary
What is a password manager?
A password manager stores unique passwords and helps you avoid dangerous password reuse.
Last reviewed: 2026-05-23
In plain English
The biggest benefit is uniqueness. If one service is breached, attackers cannot reuse the same password elsewhere.
Password managers also make long, random passwords realistic for everyday use.
You still need good hygiene: strong master password, MFA, and secure recovery methods.
Real-world example
Instead of reusing one password, your manager creates a different password for each account.
What you should do
- Use a strong, unique master password.
- Enable MFA on the password manager account.
- Start replacing reused passwords on inbox and finance services first.
Related terms
What is credential stuffing?
Credential stuffing is when attackers test leaked email-password pairs on many websites, hoping people reused passwords.
What is multi-factor authentication (MFA)?
MFA adds a second login check after your password, like an app code or hardware key.
What is account takeover?
Account takeover (ATO) is when someone gains control of your account and can change settings, spend money, or lock you out.