Passkeys generally protect the login secret better than password managers do. A passkey is an origin-bound cryptographic credential, so a phishing site cannot obtain a valid response for the real service. A password manager remains essential for accounts that do not support passkeys because it creates unique passwords and limits credential-stuffing damage.
Neither option contains malware that already controls your device. An infostealer can target browser password stores, autofill data and session cookies. The strongest practical setup is passkeys—preferably a device-bound passkey or FIDO2 security key—for high-value accounts, plus a reputable password manager for legacy sites and a recovery plan.
As an Amazon Associate I earn from qualifying purchases.
Why an infostealer changes the comparison
An infostealer is malware designed to collect valuable data from an infected computer or phone. Common targets include browser-stored passwords, password-manager data exposed through the browser, authentication cookies, session tokens, cryptocurrency wallets and local files. The attacker usually sells or uses the material quickly, often to take over accounts without repeating the original login.
Free tools Windows power users keep installed
One-click scans. No signup required.
This creates two different security questions:
- Can the attacker obtain the secret used to authenticate? Passkeys have a major advantage because the private key is not a reusable password and is scoped to one website.
- Can the attacker use an already authenticated session? Both passkeys and password managers remain vulnerable if malware steals a valid session token or cookie after you log in.
The U.S. Cyber Safety Review Board has described widespread theft and monetization of authentication cookies by infostealer malware. In other words, a strong login method does not retroactively protect a session that the browser has already issued.
#1 Best Overall
- POWERFUL SECURITY KEY: The YubiKey 5C NFC is the most versatile physical passkey, protecting your digital life from phishing attacks. It ensures only you can access your accounts
- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5C NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5C NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
What a password manager protects—and what it cannot
Its main benefit is eliminating password reuse
A password manager generates a different, random password for every site and fills it into the matching login page. If one retailer suffers a breach, the exposed password should not work on your email, banking or work accounts. This directly reduces credential-stuffing attacks, in which criminals try leaked username-and-password pairs at many services.
FIDO Alliance reported in 2024 that up to 51% of passwords are reused and that passwords are the root cause of more than 80% of data breaches. Those figures describe the broad password problem, not a test of any particular password-manager product, but they explain why unique generated passwords remain valuable.
Autofill can reduce phishing, but it is not cryptographic proof
Many managers match a saved credential to a website origin and will not autofill on a look-alike domain. That is safer than copying a password from a note or using the same password everywhere. However, a user can still be tricked into typing or pasting a password into a fake page, and an infostealer operating locally may read the browser or manager process after the password has been unlocked.
The endpoint is part of the trust boundary
Microsoft has documented that the encryption key used for browser-stored passwords can be available to any process running on the device, including locally running malware. A password manager therefore provides password-hygiene infrastructure, not a malware-containment boundary. If an attacker controls the endpoint, it may capture an autofilled secret, inspect browser data or monitor the session while the vault is open.
How to get the most from a manager
- Use a long, unique manager account password that has never been used elsewhere.
- Turn on phishing-resistant multifactor authentication for the manager account when the service supports FIDO2 or WebAuthn.
- Generate a unique password for every site; do not save a manually reused password merely because it is memorable.
- Enable automatic vault locking and require a device unlock or biometric check before autofill.
- Keep the browser, operating system, manager application and extension updated.
- Review the manager’s security alerts and remove credentials for services you no longer use.
CISA recommends using password managers and enabling their security features, including multifactor authentication. Those controls substantially improve account hygiene, but they cannot guarantee that a secret remains private after an infostealer gains control of the device.
Rank #2
- 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.
How passkeys work
A public key is stored by the service
When you create a passkey, the authenticator generates a public/private key pair. The website stores the public key. The private key stays with the authenticator, such as a phone, computer security module or hardware security key. At sign-in, the service sends a challenge; after you unlock the authenticator, it signs that challenge with the private key. The service verifies the signature with the public key.
The website origin is built into the credential
Passkeys are associated with a specific relying-party domain. Microsoft states that a passkey cannot be presented to a look-alike phishing site. FIDO Alliance puts the distinction this way: “Unlike passwords, FIDO credentials are highly phishing resistant, and the credential—a private key—cannot be stolen from the relying party (RP) servers.”
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →This prevents two important attacks. A fake site cannot simply collect a passkey as if it were a password, and a breach of the service’s database does not reveal a reusable private secret. The attacker would need the authenticator or a compromise of the account and devices that manage it.
Passkeys do not make an infected device safe
Malware may not be able to export a protected private key, particularly when it is held in dedicated hardware. It can still observe what happens around authentication. For example, malware may wait until you unlock the device, abuse a logged-in browser, or steal the session cookie issued after a successful passkey sign-in. Passkey protection is therefore strongest for the authentication exchange itself, not for every action after login.
CISA describes FIDO/WebAuthn authentication as the only widely available phishing-resistant authentication. Microsoft similarly describes passkeys as providing cryptographic proof that attackers cannot phish, intercept or replay. Those statements concern the authentication ceremony; they are not a promise that endpoint malware cannot steal sessions.
Rank #3
- POWERFUL SECURITY KEY: The YubiKey 5 NFC is the most versatile physical passkey, protecting your digital life from phishing attacks. It ensures only you can access your accounts
- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5 NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5 NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
Comparison: password manager, synced passkey and device-bound key
The following comparison separates protection of the login secret from the separate problem of session theft.
| Security or usability axis | Password manager | Synced passkey | Device-bound passkey or FIDO2 key |
|---|---|---|---|
| Phishing resistance | Depends on origin-aware autofill; a password can still be phished or manually pasted | Strong; the credential is origin bound | Strong; the credential is origin bound |
| Reuse and credential stuffing | Strong improvement when every password is unique | Eliminates password reuse for supported services | Eliminates password reuse for supported services |
| Exposure to a local infostealer | Stored passwords and autofill state may be exposed | Situation dependent; endpoint and sync-provider account remain important | Private key stays on the device or key, but malware can still steal sessions |
| Session-cookie theft | Still possible after login | Still possible after login | Still possible after login |
| Recovery | Usually good when vault synchronization works; manager-account security is critical | Usually easiest because the credential can synchronize to additional devices | Hardest; register backups and document recovery methods |
| Best fit | Sites without passkeys and mixed legacy accounts | Most users who want strong protection with convenience | Administrators, privileged users and highest-value accounts |
Synced passkeys versus device-bound passkeys
Synced passkeys trade some control for recoverability
A synced passkey is copied through a provider’s protected synchronization system so it can be used on multiple devices. This is convenient when you replace a phone or need to sign in from a new computer. The passkey remains phishing resistant because the credential is still tied to the service origin.
The trade-off is a larger trust boundary. The sync account, its recovery methods and every enrolled device become relevant to the security of the credential. You may also have less visibility into exactly where copies exist. Protect the sync account with a strong, phishing-resistant authenticator and review its enrolled devices regularly.
Device-bound credentials maximize control
A device-bound passkey is kept on one device, and a FIDO2 security key keeps the private key inside the physical key. This makes the credential harder to copy and is particularly appropriate for administrator accounts, primary email, financial services and the account that controls your password manager.
The operational cost is recovery. If the only key is lost, damaged or left behind, you may be locked out. Register at least one backup authenticator while you still have access, store it separately, and retain the service’s documented recovery method. For critical accounts, two keys kept in different secure locations are more practical than relying on a single key.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Rank #4
- POWERFUL SECURITY KEY: The Security Key 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 NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key NFC via USB-A 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.
What a FIDO2 security key does—and does not do
The clearest physical-product choice is a FIDO2 security key. It is a hardware authenticator that performs the origin-bound challenge response without handing the private key to the website. Compatibility depends on the service, browser, operating system and available USB, NFC or other connection, so verify those requirements before deployment.
A security key does not encrypt an already-issued browser session. If malware steals the session cookie after you authenticate, the attacker may replay it unless the service detects the abnormal use or applies token-binding protections.
Why session cookies can defeat a strong login
After successful authentication, a website normally gives the browser a session token, often represented by a cookie. The browser presents that token on later requests so you do not have to prove your identity on every page. An infostealer that copies the token may be able to act as you until the session expires, is revoked or is challenged again.
This is why “Do passkeys stop cookie stealers?” has a different answer from “Do passkeys stop phishing?” Passkeys strongly address the second question. They do not, by themselves, solve the first.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Microsoft recommends token-protection features where they are available. The Cyber Safety Review Board has called for stronger browser protections against stolen cookies. Availability varies by service and account type, so check the security settings for each important account rather than assuming a universal control.
Best Value
- FIDO2 & Passkey Ready: Business-ready and FIDO2 L1 certified. This key is supported by major management suites and is ideal for both individual and enterprise deployment. Works seamlessly with Gmail, Facebook, GitHub, Dropbox, Coinbase, and more.
- Universal Connectivity (USB-A ): Features a built-in USB-A connector—simply unfold the key and plug it into your compatible PC or laptop for seamless authentication on the go.
- Dedicated Manager App: Use the Thetis Manager App for the initial hardware PIN setup. Setting the PIN on the device first ensures a smooth registration process. Once the PIN is configured, you can begin registering the key across your favorite FIDO2-compatible online services.
- Ultra-Durable & Portable: Featuring a rotating metal cover, this key is water, crush, and tamper-resistant. It fits easily on a keychain and requires no batteries or network connectivity.
- Check FIDO2 compatibility before purchase - Known limitations: ID Austria is not supported (requires FIDO2 Level 2). Windows Hello login only works with Windows Enterprise editions that support Entra ID, and NFC is NOT supported.
Reduce the value of a stolen session
- Use services that offer short session lifetimes, reauthentication for sensitive actions and device or risk-based checks.
- Sign out of unused browser sessions and remove unfamiliar devices from account-security pages.
- Enable alerts for new sign-ins, password changes, recovery changes and token creation.
- Keep the browser and operating system patched so known cookie-theft techniques are less likely to succeed.
Which method should you use for each account?
Primary email, administrator and financial accounts
Use a device-bound passkey or FIDO2 security key as the primary sign-in method, and register a backup authenticator. These accounts can reset other passwords or authorize high-impact actions, so the extra recovery planning is justified. Keep the backup key in a separate secure location and test the recovery process before an emergency.
Password-manager account
Protect the manager’s own account with a unique master password and phishing-resistant multifactor authentication. A passkey or hardware key is preferable when supported. The manager is a central dependency: if its account is taken over, many stored credentials may be exposed even if every individual password was unique.
Services that support passkeys
Enroll a passkey through the service’s account-security page, then make it the preferred sign-in method if the service offers that setting. Keep a password or recovery method only when the service requires it, and secure that fallback with a unique generated password. Review the list of registered authenticators and remove old or lost devices.
Legacy sites without passkeys
Use the password manager to generate a long, unique password. Do not weaken the password because the site lacks a passkey; uniqueness still prevents a breach at that site from unlocking another account. Enable the strongest available multifactor method, preferably a FIDO/WebAuthn key, and use app-based codes only when stronger options are unavailable.
How to deploy a safer setup
Enroll a passkey on a supported account
- Update the operating system, browser and account app on the device you intend to use.
- Open the service’s account or security settings and choose the option labelled Passkeys, Security keys or Add sign-in method. Labels vary by provider.
- Confirm the domain in the browser address bar before approving enrollment. Do not create a credential from an email link whose destination you have not verified.
- Unlock the device with its required biometric, PIN or screen lock and complete registration.
- Sign out and test passkey sign-in in a separate browser window.
- Register a second passkey or security key and record the service’s recovery requirements.
Register a FIDO2 security key for a high-value account
- Check that the account supports FIDO2/WebAuthn and that your browser and operating system are compatible.
- Insert the key or use NFC when prompted, create or enter the key’s PIN if required, and touch the key to approve registration.
- Give the key a recognizable name in the account’s security dashboard.
- Repeat the process with a backup key kept separately.
- Test both keys from a clean, trusted device before relying on them for emergency access.
Harden the password manager for legacy accounts
- Change the manager account to a unique, high-entropy password that is not stored in another manager or reused anywhere else.
- Enable FIDO2/WebAuthn authentication when offered; otherwise use the strongest available multifactor method.
- Set a short enough auto-lock interval for your risk tolerance and require device unlock before autofill.
- Replace reused passwords in order of importance: email and recovery accounts first, then financial, work and social accounts.
- Review browser extensions and remove unofficial or unnecessary extensions that can read page content.
What to do if an infostealer may have run
Do not treat a password change made on the suspected computer as a complete cleanup. Malware may capture the new password or the fresh session.
- Stop using the suspected device for account recovery. Disconnect it from sensitive work and personal accounts while preserving evidence if an employer or incident-response team needs it.
- Move to a clean device. Use a known-good computer or phone with current updates and a trusted network.
- Revoke sessions and tokens first. In each important account, sign out other sessions, remove unfamiliar devices and revoke application tokens or backup codes where the service allows it.
- Reset credentials from the clean device. Change the password-manager account, primary email, financial accounts and any password that was stored or autofilled on the infected endpoint.
- Re-enroll authenticators if necessary. Remove passkeys or security keys associated with a lost or compromised device and register trusted replacements.
- Rebuild or thoroughly remediate the endpoint. For a confirmed infection, a full operating-system rebuild is often more reliable than assuming that deleting one suspicious file removed every persistence mechanism.
- Monitor for follow-on abuse. Watch sign-in alerts, payment activity, email-forwarding rules, recovery-address changes and newly created sessions.
A practical decision framework
- If the service supports passkeys: use one. Choose a synced passkey when recovery and multi-device convenience matter most; choose a device-bound passkey or FIDO2 key when control and resistance to credential copying matter most.
- If the service does not support passkeys: use a password manager, generate a unique password and add the strongest available multifactor authentication.
- If the account can reset other accounts: prefer a device-bound passkey or FIDO2 key, register a backup and protect the recovery channel.
- If you suspect malware: assume both passwords and sessions may be exposed, then revoke sessions and reset credentials from a clean device.
Passkeys are the better defense against phishing and reusable-credential theft because the private key is origin bound and not presented to the website as a password. Password managers remain indispensable for the large number of services that still require passwords. Using both—passkeys for supported, high-value accounts and unique manager-generated passwords elsewhere—covers more of the real-world attack surface than choosing either technology alone.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Recommended Free Tools
