{"id":3604,"date":"2026-04-04T09:32:00","date_gmt":"2026-04-04T09:32:00","guid":{"rendered":"https:\/\/www.captcha.eu\/?p=3604"},"modified":"2026-04-04T09:50:28","modified_gmt":"2026-04-04T09:50:28","slug":"comment-prevenir-les-attaques-par-force-brute-sur-votre-site-web","status":"publish","type":"post","link":"https:\/\/www.captcha.eu\/fr\/comment-prevenir-les-attaques-par-force-brute-sur-votre-site-web\/","title":{"rendered":"Comment pr\u00e9venir les attaques par force brute sur votre site web ?"},"content":{"rendered":"\n
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captcha.eu<\/figcaption><\/figure>\n\n\n\n

Brute force attacks are one of the most persistent threats to website security. In 2026, they combine stolen credential lists, distributed botnets and AI-optimised guessing, making single-layer defences insufficient. This guide explains how each protection layer works, where it falls short on its own, and how to combine them effectively.<\/p>\n\n\n\n

<\/path><\/svg><\/span><\/span>Estimated reading time: <\/span>12<\/span> minutes<\/span><\/p>\n\n\n\n

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At a Glance<\/h2>\n\n\n\n
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The threat in 2026<\/strong><\/strong><\/h3>

Automated tools test millions of combinations per second across distributed IP ranges; simple IP blocking no longer suffices.<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n

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

MFA. Microsoft data shows it stops 99.9% of account compromises, even when passwords are already known<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n

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

Proof-of-work CAPTCHA acts as a built-in computational rate limiter that raises the cost of every login attempt for bots before a password is ever tried<\/p><\/div><\/div><\/div><\/div><\/div>\n\n\n\n

The right approach<\/strong><\/strong><\/strong><\/h3>

Defense in depth: no single layer stops everything. MFA, rate limiting, and CAPTCHA together close the gaps each leaves open individually<\/p><\/div><\/div><\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n

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