Use a password manager to create and save a different, long password for every account, then protect the manager and your most important accounts with multi-factor authentication (MFA). This reduces the risk that one exposed password can unlock several services—but passwords alone cannot stop phishing.
Why use a password manager?
Reusing a password lets someone who obtains it from one service try the same credential on your other accounts. A password manager helps you avoid that trade-off between remembering passwords and making them unique: it can generate and securely store a distinct password for each service. NIST says well-designed password managers support unique passwords that help protect against guessing, cracking, and password-spraying attacks. NIST’s implementation FAQ also says services must allow password managers and autofill.
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Make each account’s password long and unique rather than relying on predictable substitutions such as replacing “a” with “@”. NIST’s advice is to avoid common or easily guessed passwords; as Ryan Galluzzo, who leads NIST’s Digital Identity Program, puts it: “The worst password I can think of is ‘password’ or ‘12345.’” See NIST’s password guidance.
Choose a manager that fits your devices and recovery needs
Before moving your logins, check that the manager supports the computers, phones, tablets, and browsers you use. Test whether it can generate and fill unique passwords where you need them, and understand how it stores and synchronizes your vault.
#1 Best Overall
- POWERFUL SECURITY KEY: The Security Key C NFC is the essential physical passkey for protecting your digital life from phishing attacks. It ensures only you can access your accounts.
- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key C NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key C NFC via USB-C and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
- Cloud-synced vault: Convenient when you need access across devices. Understand the service’s recovery process and how you regain access if you lose a device.
- Local vault: Keeps the vault on your own devices, but you are responsible for making and protecting independent backups. Losing the device or backup can mean losing access.
Neither storage model is right for everyone. CISA recommends weighing device support, synchronization, recovery and emergency access, MFA, password generation and filling, and backup upkeep if you choose local storage. CISA’s password-manager guidance outlines these considerations.
Set up the vault before moving all your accounts
- Install the manager on your supported devices and browsers. Use its official app or extension, and confirm you can open the vault on the devices you rely on.
- Create a long master passphrase. This is the secret that protects access to the vault; make it different from every other password and choose something you can reliably enter or securely retain according to the manager’s guidance.
- Turn on MFA for the manager if it offers it. A second factor makes a stolen master password less likely to be enough on its own.
- Learn and test account recovery. Find out what happens if you forget the master passphrase, lose your phone, or cannot use your second factor. Set up any available recovery or emergency-access option before relying on the vault.
- Generate and save a unique password for each account. Start with email, financial accounts, and other services that can expose sensitive information or help reset other logins. Use the manager’s generator and save the replacement in the correct entry.
- Check the login before moving on. Sign out and back in, or otherwise verify the new credential works, before treating the change as complete.
Protect the master secret carefully: if someone compromises it, the passwords stored in the vault may also be at risk. NIST notes that vault compromise can mean replacing the passwords held inside it. NIST’s Digital Identity FAQ discusses password-manager risks.
Rank #2
- Requires 3 "AAA" batteries (included)
- Unit auto-locks for 30 minutes after 5 consecutive incorrect PINs
Prioritize MFA on email and other important accounts
Enable MFA wherever it is available, especially on your email account. Email is often used to receive password-reset links, so control of that inbox can help someone take over other accounts. An authenticator app or a hardware security key can be stronger choices than codes sent by text or email when the service supports them. Prefer phishing-resistant MFA when offered: a unique password helps against reuse and guessing, but it does not stop you from entering credentials on a convincing fake sign-in page. NIST states, “Passwords are not phishing-resistant.” See NIST’s MFA guidance and the FTC’s account-protection advice.
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When a security key may help
A physical security key is an optional MFA method, not a replacement for a password manager. Before buying one, confirm that the account and the devices you use support the key and its connection method. Availability and compatibility vary by service and device.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the 15-character guidance means
NIST’s SP 800-63B-4, published in July 2025, requires services to accept passwords of at least 15 characters when a password is used as the sole authentication factor. For passwords used as part of MFA, the required minimum may be shorter, but must be at least eight characters. These are requirements for services covered by the standard; they do not mean every website already enforces those lengths. NIST also says services should block commonly used, expected, or compromised passwords rather than impose extra character-composition rules. Read the NIST standard.
CISA recommends unique passwords of at least 15 characters in its ransomware guidance for organizational environments. That is organizational guidance, not a separate consumer-wide legal or technical requirement. CISA’s #StopRansomware Guide also advises securing password managers and enabling available features such as MFA.
Quick Recap
Rank #4
- FIDO-ONLY FUNCTIONALITY: Supports FIDO2 (passkeys) and FIDO U2F protocols for passwordless and second-factor authentication. Does not support OTP, TOTP, Smart Card (PIV), or other advanced features - upgrade to YubiKey 5 Series for extended functionality
- SECURE AND CONVENIENT: Passwordless MFA login with the YubiKey Bio authenticator and biometric information using a fingerprint, with a PIN as a fallback. Simply plug in via USB and use your fingerprint to authenticate
- DEVICE & OS COMPATIBILITY: Compatible with Windows, macOS, ChromeOS, and Linux. Works seamlessly with supported services like Google and Microsoft accounts, and major password managers. See the full compatibility list at "Works With YubiKey"
- DURABLE & RELIABLE: Resistant to tampering, water, and crushing. No batteries or network connectivity required, offering dependable authentication without any downtime. Securely manufactured in USA & Sweden
- Yubico Authenticator App - Fingerprint enrollment, passkey management and PIN configuration available via the app app - Upgrade to YubiKey 5 Series to generate one-time-passwords (OTP) via Yubico Authenticator and for advanced compatibility (OATH, PIV)
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