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There is no reliable official ranking showing which password attack is most common. The recurring methods differ in what an attacker needs: phishing tricks someone into revealing a password, credential stuffing reuses credentials exposed elsewhere, password spraying tests a few guesses across many accounts, and brute-force guessing automates password attempts. Unique passwords, multi-factor authentication (MFA), and sensible sign-in protections reduce risk, but no single measure guarantees an account cannot be compromised.
How the main password attacks differ
The key distinction is whether attackers deceive a person, reuse credentials from another breach, or guess passwords. That difference points to the most direct defense.
| Method | Attacker’s starting point | How it works | Most direct defenses |
|---|---|---|---|
| Phishing | A way to impersonate someone or an organization the target trusts | The victim is persuaded to disclose a password or enter it on a fraudulent sign-in page. | Verify requests through a known channel; avoid unexpected links; use MFA, preferably a phishing-resistant option where available. |
| Credential stuffing | Username-and-password pairs exposed from another service | Automated attempts test those pairs on other services. | Use a different password for every account; consider a password manager; enable MFA. |
| Password spraying | A list of usernames and a short list of common passwords | A few guesses are tried against many accounts, keeping attempts per account low. | Enable MFA; organizations should set appropriate failed-login controls and monitor authentication activity. |
| Brute-force guessing | A login target and candidate passwords | Automated password candidates are tried until one works. | Use long passwords; organizations should apply rate limits or lockout controls and monitor sign-ins. |
| Compromised password database | Access to stored password data | Exposed credentials or password hashes may be abused. | System owners should restrict access and store passwords using appropriately strong salted hashing; MFA adds another layer. |
Phishing: stealing credentials through deception
A phishing message may imitate a bank, utility, vendor, or colleague and use urgency to prompt action. It may link to a fake login page or ask directly for sensitive information. A password can be strong and unique yet still be stolen if its owner enters it on a fraudulent page.
- Do not click links or download attachments in unexpected messages.
- If a request might be legitimate, contact the organization using a website, email address, or phone number you already know is genuine—not contact details in the message.
- Report suspicious messages through your organization’s established route, if you have one.
The FTC’s April 2025 consumer guidance advises: “Protect your accounts by using two-factor authentication.” FTC: Protect yourself from phishing scams.
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- 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
If you shared a password
Change the exposed password promptly, and change it anywhere else you reused it. If this happened at work, follow your organization’s incident procedures and notify the appropriate security or IT contact. For business defenses, the FTC recommends employee training, email authentication, a reporting route, and verifying sensitive requests through a known contact channel.
Credential stuffing: why password reuse is risky
Credential stuffing is the automated testing of username-and-password pairs exposed from one service on other services. It depends on reuse: a password that is difficult to guess on one site can put another account at risk if it was exposed elsewhere and reused there. CISA and the FTC describe this mechanism in their guidance.
Rank #2
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- 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.
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Use a unique password for every account. A password manager can help create and keep track of separate, sufficiently long passwords, so you do not have to memorize each one. MFA can make a stolen password less useful on its own.
Password spraying: a few guesses across many accounts
Password spraying reverses the pattern of trying many passwords against one account: the attacker tries a short list of common passwords against many usernames. CISA notes that attempts may be kept below each account’s failed-login threshold to reduce the chance of triggering lockout. MFA reduces the value of a guessed password; organizations can also use appropriate failed-login limits and monitor authentication events.
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
Brute-force guessing and password cracking
Brute-force guessing uses automated attempts through candidate passwords until one works. The FTC uses the term for programs that test combinations. This is different from credential stuffing, which tests credentials exposed from another service rather than generating guesses.
Online guessing targets a sign-in page. Attacks involving stolen password hashes are a separate problem: the official sources cited here establish the importance of secure salted password storage, but do not establish enough detail to compare offline cracking methods or their relative speeds. For individuals, use long, unique passwords and MFA. For system owners, protect stored credentials and limit access to them.
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.
Practical protections for individuals
- Make passwords unique. Do not reuse a password across accounts. A password manager can help you maintain that separation.
- Choose long passwords or passphrases. CISA’s guidance recommends 15 or more characters in the organizational contexts it addresses. FTC small-business guidance calls for strong passwords of at least 12 characters. These are source-specific recommendations, not a universal legal requirement or a guarantee of safety.
- Enable MFA. A second factor means a stolen or guessed password may not be sufficient to sign in. Where supported, consider a phishing-resistant option such as a security key.
- Check compatibility and recovery before relying on a security key. Verify that both your account and device support the chosen key, and understand how you can recover access if it is lost.
- Handle unexpected requests cautiously. Verify the sender and request using contact information you already trust rather than a message link.
Protections for small businesses
Businesses need controls that address both stolen passwords and repeated login attempts. No single control prevents every path to account takeover.
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- Require unique, strong passwords and MFA. The FTC’s small-business recommendations call for passwords of at least 12 characters, no reuse, and MFA. CISA recommends 15 or more characters in the organizational contexts its guidance covers; treat these as recommendations from their respective sources, not interchangeable legal standards.
- Limit unsuccessful login attempts. Use appropriate limits or lockout controls to make repeated guessing harder without creating avoidable disruption for legitimate users.
- Monitor authentication events. Review sign-in activity for patterns that warrant investigation, including repeated failures across accounts.
- Restrict access to credentials. Store passwords using strong salted hashing with significant iterations, as the FTC business guide recommends, and limit access to systems and repositories containing sensitive credentials.
- Prepare for phishing. Train employees, use email authentication, provide a clear way to report suspicious messages, and verify sensitive requests through known contact routes.
- Plan response steps. If credentials may have been exposed, change compromised passwords promptly and follow the organization’s incident procedures.
Security incidents illustrate why credential handling matters, but their impact figures do not measure how frequently a particular attack occurs. The FTC’s business guide describes its Drizly matter as affecting 2.5 million consumers and its Chegg matter as involving 40 million users; those are case impact figures, not prevalence rates for password attacks.
Best Value
- Ultra-Compact FIDO2 Security Key - Plug-and-stay or carry on a keychain. This USB-A hardware security key offers portable, always-on protection for desktop and mobile use. (Item Size: 0.75 X 0.74 IN x 0.25 IN)
- USB-A Hardware Key for All Devices - Works with USB-A ports on PC, Mac, Android, and other laptop/notebook device. Enables secure, cross-platform login with FIDO2.0 passkey support.
- FIDO Certified Security Key - Meets FIDO and FIDO2 standards. Works with Google, Microsoft, GitHub, Dropbox, and more. Please check service compatibility before purchase.
- Passwordless Login with Passkey - Supports passkey login via WebAuthn and CTAP2. Enjoy password-free sign-ins where supported. Not all websites or services currently support passkeys.
- Advanced Multi-Factor Authentication - Offers 200 FIDO2 passkey slots and 50 OATH-TOTP slots. Strong, flexible 2FA/MFA support across various apps and authentication platforms.
Is one technique actually the most common?
The official guidance cited here describes recurring attack categories but does not provide comparable rates across phishing, credential stuffing, password spraying, and brute-force guessing. It therefore cannot support a current ranking or a claim about which method succeeds most often. The useful takeaway is to protect against each path: prevent password reuse, verify unexpected requests, add MFA, and use login controls and monitoring in business systems.
Quick Recap
Official guidance
- CISA: Identity and Access Management Recommended Best Practices for Administrators
- CISA: #StopRansomware Guide
- FTC: Cybersecurity for Small Business
- FTC: Start with Security: A Guide for Business
- FTC: Protect yourself from phishing scams
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