{"id":14866,"date":"2026-01-20T17:31:47","date_gmt":"2026-01-20T14:31:47","guid":{"rendered":"https:\/\/smspva.com\/blog\/cach-tao-mat-khau-chong-brute-force-tan-cong-vi\/"},"modified":"2026-01-20T17:31:47","modified_gmt":"2026-01-20T14:31:47","slug":"cach-tao-mat-khau-chong-brute-force-tan-cong-vi","status":"publish","type":"post","link":"https:\/\/smspva.com\/blog\/vi\/cach-tao-mat-khau-chong-brute-force-tan-cong-vi\/","title":{"rendered":"C\u00e1ch T\u1ea1o M\u1eadt Kh\u1ea9u Ch\u1ed1ng Brute-Force"},"content":{"rendered":"\n<style>\/* Article styles *\/* { box-sizing: border-box; }html { font-family: Arial, sans-serif; } .container { max-width: 900px; margin: 0 auto; padding: 20px; color: #333; } .kicker { display: flex; gap: 8px; align-items: center; margin: 8px 0 16px; flex-wrap: wrap; } .badge { background: #f0f0f0; padding: 6px 10px; border-radius: 999px; font-size: 12px; } h1 { font-size: 28px; line-height: 1.25; margin: 6px 0 12px; } .section { margin: 28px 0; } .tldr { background: #f9f9f9; border-left: 4px solid #2c7be5; padding: 12px 14px; margin: 12px 0; } ul, ol { margin: 0 0 12px 20px; } .table { width: 100%; border-collapse: collapse; margin: 12px 0; } .table th, .table td { border: 1px solid #ddd; padding: 8px; text-align: left; } .cta { display: flex; gap: 12px; margin: 18px 0; flex-wrap: wrap; } .button { padding: 12px 18px; background: #2c7be5; color: #fff; text-decoration: none; border-radius: 6px; display: inline-block; } .secondary { background: #6c757d; } a.external { color: #1a0dab; text-decoration: underline; } @media (max-width: 720px) { .container { padding: 12px; } .button { width: 100%; } }<\/style><article class='container' itemscope itemtype='https:\/\/schema.org\/TechArticle'><header><img src='\/storage\/articles\/how-generate-passwords-resistant-brute-force-attacks.png' alt='C\u00e1ch t\u1ea1o m\u1eadt kh\u1ea9u ch\u1ed1ng t\u1ea5n c\u00f4ng brute-force - infographic \u0111\u1ed9 m\u1ea1nh m\u1eadt kh\u1ea9u'><h1>C\u00e1ch T\u1ea1o M\u1eadt Kh\u1ea9u Ch\u1ed1ng Brute-Force<\/h1><div class='kicker'><span class='badge'>To\u00e0n c\u1ea7u<\/span><span class='badge'>B\u1ea3o m\u1eadt m\u1eadt kh\u1ea9u<\/span><span class='badge'>B\u1ea3o v\u1ec7 ch\u1ed1ng Brute-Force<\/span><\/div><\/header><p>C\u00e1ch t\u1ea1o m\u1eadt kh\u1ea9u ch\u1ed1ng brute-force r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i kho\u1ea3n tr\u1ef1c tuy\u1ebfn. B\u1eb1ng c\u00e1ch l\u00e0m theo c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 r\u1ee7i ro truy c\u1eadp tr\u00e1i ph\u00e9p.<\/p><div class='tldr'><strong>T\u00f3m t\u1eaft:<\/strong><ul><li>M\u1ed9t m\u1eadt kh\u1ea9u d\u00e0i v\u00e0 \u0111\u1ed9c nh\u1ea5t (14 k\u00fd t\u1ef1 tr\u1edf l\u00ean).<\/li><li>S\u1eed d\u1ee5ng tr\u00ecnh qu\u1ea3n l\u00fd m\u1eadt kh\u1ea9u \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 l\u01b0u tr\u1eef ch\u00fang an to\u00e0n.<\/li><li>B\u1eadt x\u00e1c th\u1ef1c \u0111a y\u1ebfu t\u1ed1 (MFA) \u1edf m\u1ecdi n\u01a1i c\u00f3 th\u1ec3.<\/li><li>Kh\u00f4ng t\u00e1i s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u tr\u00ean nhi\u1ec1u trang web v\u00e0 d\u1ecbch v\u1ee5.<\/li><li>\u0110\u00e1nh gi\u00e1 v\u00e0 c\u1eadp nh\u1eadt m\u1eadt kh\u1ea9u th\u01b0\u1eddng xuy\u00ean nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a th\u00f3i quen b\u1ea3o m\u1eadt c\u1ee7a b\u1ea1n.<\/li><\/ul><\/div><section class='section' aria-labelledby='why-use'><h2 id='why-use'>T\u1ea1i sao d\u00f9ng m\u1eadt kh\u1ea9u m\u1ea1nh<\/h2><p>M\u1eadt kh\u1ea9u m\u1ea1nh v\u00e0 \u0111\u1ed9c nh\u1ea5t l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng brute-force ph\u1ea3i b\u1ecf ra. Ch\u00fang l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng l\u1ea1m d\u1ee5ng th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0 vi ph\u1ea1m mi\u1ec1n. \u0110\u1ec3 tham kh\u1ea3o c\u00e1c h\u01b0\u1edbng d\u1eabn chu\u1ea9n m\u1ef1c, xem <a href='https:\/\/pages.nist.gov\/800-63-3\/sp800-63b.html' target='_blank' rel=\"noopener\" class='external'>NIST SP 800-63B<\/a> v\u00e0 <a href='https:\/\/cheatsheetseries.owasp.org\/cheatsheets\/Password_Storage_Cheat_Sheet.html' target='_blank' rel=\"noopener\" class='external'>OWASP Password Storage<\/a> ngu\u1ed3n. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c kh\u00e1i ni\u1ec7m chung v\u1ec1 \u0111\u1ed9 m\u1ea1nh m\u1eadt kh\u1ea9u <a href='https:\/\/en.wikipedia.org\/wiki\/Password_strength' target='_blank' rel=\"noopener\" class='external'>\u0111\u1ed9 m\u1ea1nh m\u1eadt kh\u1ea9u<\/a> v\u00e0 t\u1ea5n c\u00f4ng brute-force tr\u00ean <a href='https:\/\/en.wikipedia.org\/wiki\/Brute-force_attack' target='_blank' rel=\"noopener\" class='external'>Brute-force attacks<\/a>.<\/p><\/section><section class='section' aria-labelledby='how-to'><h2 id='how-to'>C\u00e1ch t\u1ea1o m\u1eadt kh\u1ea9u ch\u1ed1ng brute-force<\/h2><ol><li>Ch\u1ecdn m\u1eadt kh\u1ea9u d\u00e0i ho\u1eb7c passphrase. H\u01b0\u1edbng t\u1edbi 14 k\u00fd t\u1ef1 tr\u1edf l\u00ean, k\u1ebft h\u1ee3p ch\u1eef hoa ch\u1eef th\u01b0\u1eddng, s\u1ed1 v\u00e0 k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t.<\/li><li>\u01afu ti\u00ean sinh ng\u1eabu nhi\u00ean ho\u1eb7c d\u00f9ng qu\u1ea3n l\u00fd m\u1eadt kh\u1ea9u \u0111\u1ec3 tr\u00e1nh m\u1eabu c\u00f3 th\u1ec3 \u0111o\u00e1n \u0111\u01b0\u1ee3c.<\/li><li>B\u1eadt MFA \u0111\u1ec3 c\u00f3 l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung ngo\u00e0i m\u1eadt kh\u1ea9u.<\/li><li>S\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u duy nh\u1ea5t cho m\u1ed7i d\u1ecbch v\u1ee5 \u0111\u1ec3 h\u1ea1n ch\u1ebf thi\u1ec7t h\u1ea1i t\u1eeb m\u1ed9t v\u1ee5 r\u00f2 r\u1ec9.<\/li><li>Tr\u00e1nh c\u00e1c thay th\u1ebf ph\u1ed5 bi\u1ebfn m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng nh\u1eadn di\u1ec7n (v\u00ed d\u1ee5, 0 cho o, 1 cho l).<\/li><li>R\u00e0 so\u00e1t v\u00e0 xoay v\u00f2ng m\u1eadt kh\u1ea9u th\u01b0\u1eddng xuy\u00ean sau c\u00e1c s\u1ef1 c\u1ed1 an ninh ho\u1eb7c thay \u0111\u1ed5i ch\u00ednh s\u00e1ch.<\/li><li>Ki\u1ec3m tra \u0111\u1ed9 m\u1ea1nh m\u1eadt kh\u1ea9u b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 \u0111\u00e1ng tin c\u1eady v\u00e0 gi\u1eef m\u1eadt kh\u1ea9u ch\u00ednh (master password) an to\u00e0n.<\/li><\/ol><\/section><section class='section' aria-labelledby='table'><h2 id='table'>M\u1eadt kh\u1ea9u y\u1ebfu vs m\u1ea1nh: b\u1ea3ng so s\u00e1nh nhanh<\/h2><table class='table' aria-label='So s\u00e1nh \u0111\u1ed9 m\u1ea1nh m\u1eadt kh\u1ea9u'><thead><tr><th>Kh\u00eda c\u1ea1nh<\/th><th>M\u1eadt kh\u1ea9u y\u1ebfu<\/th><th>M\u1eadt kh\u1ea9u m\u1ea1nh \/ \u0110\u01b0\u1ee3c sinh ra<\/th><\/tr><\/thead><tbody><tr><td>\u0110\u1ed9 d\u00e0i<\/td><td>6\u20138 k\u00fd t\u1ef1<\/td><td>14+ k\u00fd t\u1ef1<\/td><\/tr><tr><td>\u0110\u1ed9 ng\u1eabu nhi\u00ean<\/td><td>Th\u1ea5p, c\u00f3 th\u1ec3 \u0111o\u00e1n \u0111\u01b0\u1ee3c<\/td><td>Cao, ng\u1eabu nhi\u00ean<\/td><\/tr><tr><td>Kh\u1ea3 n\u0103ng d\u1ef1 \u0111o\u00e1n<\/td><td>D\u1ec5 b\u1ecb l\u1ed9 m\u1eabu ph\u1ed5 bi\u1ebfn<\/td><td>Ch\u1ed1ng \u0111o\u00e1n m\u00f2<\/td><\/tr><tr><td>S\u1eed d\u1ee5ng l\u1ea1i<\/td><td>Th\u01b0\u1eddng t\u00e1i s\u1eed d\u1ee5ng<\/td><td>Duy nh\u1ea5t cho t\u1eebng site<\/td><\/tr><tr><td>L\u01b0u tr\u1eef<\/td><td>Th\u01b0\u1eddng kh\u00f4ng an to\u00e0n (b\u1eb1ng v\u0103n b\u1ea3n thu\u1ea7n ho\u1eb7c t\u00e1i s\u1eed d\u1ee5ng)<\/td><td>L\u01b0u tr\u1eef an to\u00e0n b\u1edfi tr\u00ecnh qu\u1ea3n l\u00fd m\u1eadt kh\u1ea9u<\/td><\/tr><\/tbody><\/table><\/section><section class='section' aria-labelledby='safe-legal'><h2 id='safe-legal'>S\u1eed d\u1ee5ng an to\u00e0n v\u00e0 h\u1ee3p ph\u00e1p<\/h2><p>S\u1eed d\u1ee5ng c\u00e1c th\u1ef1c h\u00e0nh m\u1eadt kh\u1ea9u t\u1ed1t ch\u1ec9 cho c\u00e1c t\u00e0i kho\u1ea3n b\u1ea1n s\u1edf h\u1eefu. Kh\u00f4ng c\u1ed1 g\u1eafng x\u00e2m nh\u1eadp v\u00e0o d\u1ecbch v\u1ee5 c\u1ee7a ng\u01b0\u1eddi kh\u00e1c. Lu\u00f4n tu\u00e2n th\u1ee7 lu\u1eadt ph\u00e1p \u0111\u1ecba ph\u01b0\u01a1ng v\u00e0 \u0111i\u1ec1u kho\u1ea3n d\u1ecbch v\u1ee5. \u0110\u1ed1i v\u1edbi nh\u1eadn th\u1ee9c an ninh t\u1ed5ng qu\u00e1t, tham kh\u1ea3o <a href='https:\/\/safety.google\/' target='_blank' rel=\"noopener\" class='external'>Google Safety<\/a> v\u00e0 c\u00e1c ngu\u1ed3n an ninh \u0111\u00e1ng tin c\u1eady.<\/p><\/section><section class='section' aria-labelledby='faq'><h2 id='faq'>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2><div class='faq-item'><strong>T\u1ea5n c\u00f4ng brute-force l\u00e0 g\u00ec?<\/strong><p>M\u1ed9t t\u1ea5n c\u00f4ng brute-force c\u1ed1 g\u1eafng th\u1eed nhi\u1ec1u t\u1ed5 h\u1ee3p m\u1eadt kh\u1ea9u \u0111\u1ec3 \u0111o\u00e1n m\u1eadt kh\u1ea9u, th\u01b0\u1eddng b\u1eb1ng c\u00e1ch t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/p><\/div><div class='faq-item'><strong>Kho\u1ea3ng th\u1eddi gian cho t\u1ea5n c\u00f4ng brute-force v\u1edbi m\u1eadt kh\u1ea9u m\u1ea1nh?<\/strong><p>V\u1edbi m\u1eadt kh\u1ea9u d\u00e0i c\u00f3 \u0111\u1ed9 ng\u1eabu nhi\u00ean cao (14 k\u00fd t\u1ef1 tr\u1edf l\u00ean), c\u00e1c l\u1ea7n th\u1eed t\u0103ng theo c\u1ea5p s\u1ed1 nh\u00e2n; n\u00f3 tr\u1edf n\u00ean kh\u00f4ng th\u1ef1c t\u1ebf \u0111\u1ec3 ph\u00e1 b\u1eb1ng ph\u1ea7n c\u1ee9ng th\u00f4ng th\u01b0\u1eddng.<\/p><\/div><div class='faq-item'><strong>N\u00ean d\u00f9ng tr\u00ecnh qu\u1ea3n l\u00fd m\u1eadt kh\u1ea9u kh\u00f4ng?<\/strong><p>C\u00f3. Tr\u00ecnh qu\u1ea3n l\u00fd m\u1eadt kh\u1ea9u l\u01b0u tr\u1eef m\u1eadt kh\u1ea9u d\u00e0i v\u00e0 duy nh\u1ea5t m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a th\u00f3i quen v\u1ec7 m\u1eadt kh\u1ea9u tr\u00ean c\u00e1c trang web.<\/p><\/div><div class='faq-item'><strong>Passphrase l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao an to\u00e0n h\u01a1n?<\/strong><p>Passphrase s\u1eed d\u1ee5ng nhi\u1ec1u t\u1eeb; khi \u0111\u1ee7 d\u00e0i v\u00e0 ng\u1eabu nhi\u00ean, n\u00f3 c\u00f3 \u0111\u1ed9 entropy cao v\u00e0 d\u1ec5 nh\u1edb h\u01a1n.<\/p><\/div><div class='faq-item'><strong>MFA gi\u00fap ch\u1ed1ng brute-force kh\u00f4ng?<\/strong><p>C\u00f3. MFA b\u1ed5 sung y\u1ebfu t\u1ed1 th\u1ee9 hai, ng\u0103n ch\u1eb7n k\u1ebb \u0111\u00e1nh c\u1eafp m\u1eadt kh\u1ea9u.<\/p><\/div><\/section><section class='section' aria-labelledby='cta'><h2 id='cta'>H\u00e0nh \u0111\u1ed9ng ngay<\/h2><div class='cta'><a href='https:\/\/smspva.com\/generate-password.html' class='button' target='_blank' rel=\"noopener\">T\u1ea1o m\u1eadt kh\u1ea9u ngay<\/a><a href='https:\/\/safety.google\/' class='button secondary' target='_blank' rel=\"noopener\">T\u00ecm hi\u1ec3u v\u1ec1 an to\u00e0n m\u1eadt kh\u1ea9u<\/a><\/div><\/section><p>\u0110\u1ecdc th\u00eam: <a href='https:\/\/en.wikipedia.org\/wiki\/Password_strength' target='_blank' rel=\"noopener\" class='external'>\u0111\u1ed9 m\u1ea1nh m\u1eadt kh\u1ea9u<\/a>, <a href='https:\/\/en.wikipedia.org\/wiki\/Brute-force_attack' target='_blank' rel=\"noopener\" class='external'>t\u1ea5n c\u00f4ng brute-force<\/a>, <a href='https:\/\/cheatsheetseries.owasp.org\/cheatsheets\/Password_Storage_Cheat_Sheet.html' target='_blank' rel=\"noopener\" class='external'>OWASP Password Storage Cheat Sheet<\/a>, <a href='https:\/\/pages.nist.gov\/800-63-3\/sp800-63b.html' target='_blank' rel=\"noopener\" class='external'>NIST SP 800-63B<\/a>.<\/p><\/article>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch T\u1ea1o M\u1eadt Kh\u1ea9u Ch\u1ed1ng Brute-Force To\u00e0n c\u1ea7uB\u1ea3o m\u1eadt m\u1eadt kh\u1ea9uB\u1ea3o v\u1ec7 ch\u1ed1ng Brute-Force C\u00e1ch t\u1ea1o m\u1eadt kh\u1ea9u ch\u1ed1ng brute-force r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i kho\u1ea3n tr\u1ef1c tuy\u1ebfn. B\u1eb1ng c\u00e1ch l\u00e0m theo c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 r\u1ee7i ro truy c\u1eadp tr\u00e1i ph\u00e9p. T\u00f3m t\u1eaft: M\u1ed9t m\u1eadt&#8230;<\/p>\n","protected":false},"author":5,"featured_media":14854,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[229],"tags":[],"lang":"vi","translations":{"vi":14866,"en":14853,"es":14856,"zh":14858,"ar":14859,"fr":14860,"de":14861,"tr":14862,"it":14863,"pl":14864,"ja":14867,"pt":14868},"featured":{"id":14854,"url":"https:\/\/smspva.com\/blog\/wp-content\/uploads\/2026\/01\/how-generate-passwords-resistant-brute-force-attacks.png","alt":"How to generate passwords resistant to brute-force attacks - password strength infographic"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00e1ch T\u1ea1o M\u1eadt Kh\u1ea9u Ch\u1ed1ng Brute-Force<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u c\u00e1ch t\u1ea1o m\u1eadt kh\u1ea9u ch\u1ed1ng brute-force hi\u1ec7u qu\u1ea3. 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