{"id":3616,"date":"2026-04-05T17:24:57","date_gmt":"2026-04-05T17:24:57","guid":{"rendered":"https:\/\/www.captcha.eu\/?p=3616"},"modified":"2026-04-05T17:31:18","modified_gmt":"2026-04-05T17:31:18","slug":"come-prevenire-gli-attacchi-di-credential-stuffing","status":"publish","type":"post","link":"https:\/\/www.captcha.eu\/it\/come-prevenire-gli-attacchi-di-credential-stuffing\/","title":{"rendered":"Come prevenire gli attacchi di credential stuffing sul vostro sito web"},"content":{"rendered":"\n
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captcha.eu<\/figcaption><\/figure>\n\n\n\n

Credential stuffing attacks use real passwords stolen from prior breaches, not guesswork. That makes them faster, harder to detect, and more damaging than brute force. This guide covers the six defences that stop them, what to do if an attack is already running and which endpoints to protect first.<\/p>\n\n\n\n

<\/path><\/svg><\/span><\/span>Estimated reading time: <\/span>16<\/span> minutes<\/span><\/p>\n\n\n\n

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At a Glance<\/h2>\n\n\n\n
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What makes it different<\/strong><\/strong><\/h3>

Attackers use real, working passwords from prior breaches, not random guesses. Login attempts look legitimate on the surface<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n

Why it succeeds<\/strong><\/strong><\/h3>

Around 85% of users reuse passwords across multiple services. Even a 0.1% success rate on one billion credentials yields one million compromised accounts<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n

Strongest single defence<\/strong><\/strong><\/strong><\/h3>

MFA. It stops account takeover even when the attacker has the correct password. Microsoft data shows it blocks over 99% of automated account compromise attacks<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n

Why CAPTCHA fits here<\/strong><\/strong><\/h3>

Proof-of-work CAPTCHA stops bots before they reach your login logic and raises the cost of every attempt regardless of whether the credentials are valid<\/p><\/div><\/div><\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n

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What this guide covers<\/h2><\/div>