{"id":1699,"date":"2019-11-15T20:46:03","date_gmt":"2019-11-15T13:46:03","guid":{"rendered":"https:\/\/webvocuc.com\/blog\/?p=1699"},"modified":"2022-03-18T10:15:36","modified_gmt":"2022-03-18T03:15:36","slug":"captcha-la-gi-tac-dung-cua-captcha-doi-voi-website","status":"publish","type":"post","link":"https:\/\/webvocuc.com\/blog\/captcha-la-gi-tac-dung-cua-captcha-doi-voi-website.html","title":{"rendered":"Captcha l\u00e0 g\u00ec? T\u00e1c d\u1ee5ng c\u1ee7a captcha \u0111\u1ed1i v\u1edbi website"},"content":{"rendered":"

Captcha l\u00e0 g\u00ec?<\/strong><\/a> T\u00e1c d\u1ee5ng c\u1ee7a captcha \u0111\u1ed1i v\u1edbi website. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Capcha nh\u01b0 th\u1ebf n\u00e0o? T\u00ecm hi\u1ec3u v\u1edbi b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n

Captcha l\u00e0 g\u00ec?<\/h2>\n

\"captcha<\/p>\n

Captcha l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb ti\u1ebfng Anh Completely Automated Public Turing test to tell Computers and Humans Apart. C\u00f3 ngh\u0129a l\u00e0 Ph\u00e9p th\u1eed turing c\u00f4ng c\u1ed9ng ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u00e2n bi\u1ec7t m\u00e1y t\u00ednh v\u00e0 ng\u01b0\u1eddi.<\/p>\n

\u0110\u00e2y l\u00e0 m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh b\u1ea3o v\u1ec7 c\u00e1c trang web ch\u1ed1ng l\u1ea1i c\u00e1c spam th\u00f4ng qua vi\u1ec7c t\u1ea1o ra v\u00e0 ph\u00e2n lo\u1ea1i c\u00e1c b\u00e0i ki\u1ec3m tra con ng\u01b0\u1eddi c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua m\u00e0 m\u00e1y t\u00ednh kh\u00f4ng th\u1ec3. Ch\u01b0\u01a1ng tr\u00ecnh n\u00e0y gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng x\u00e2m nh\u1eadp b\u1ea5t h\u1ee3p ph\u00e1p. Hay vi\u1ec7c truy c\u1eadp \u0111\u00e1ng ng\u1edd t\u1eeb ph\u1ea7n m\u1ec1m t\u1ef1 \u0111\u1ed9ng, h\u1ec7 th\u1ed1ng.<\/p>\n

Khi s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 internet, nh\u1ea5t l\u00e0 vi\u1ec7c \u0111\u0103ng k\u00fd t\u00e0i kho\u1ea3n tr\u00ean website, g\u1eedi \u0111i b\u00e0i vi\u1ebft, x\u00e1c nh\u1eadn m\u1eadt kh\u1ea9u,\u2026 B\u1ea1n c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t th\u00f4ng b\u00e1o t\u1eeb h\u1ec7 th\u1ed1ng v\u1edbi y\u00eau c\u1ea7u nh\u1eadp m\u00e3 y h\u1ec7t trong \u00f4. \u0110\u00f3 ch\u00ednh l\u00e0 m\u00e3 Captcha.<\/p>\n

M\u00e3 Captcha \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong khung \u1ea3nh nh\u1ecf v\u1edbi c\u00e1c k\u00ed t\u1ef1 ch\u1eef ho\u1eb7c s\u1ed1 ho\u1eb7c c\u1ea3 ch\u1eef v\u00e0 s\u1ed1. M\u00e3 th\u01b0\u1eddng c\u00f3 d\u1ea1ng m\u00e9o m\u00f3, ch\u00e8n l\u1eabn ch\u1eef s\u1ed1 in hoa c\u00f9ng v\u1edbi n\u1ec1n \u00f4 nhi\u1ec1u m\u00e0u s\u1eafc v\u00e0 th\u01b0\u1eddng nh\u1eb1m t\u1ea1o \u0111\u1ed9 kh\u00f3 nh\u1eadn d\u1ea1ng. Vi\u1ec7c nh\u1eadn d\u1ea1ng nh\u01b0 v\u1eady c\u00f3 th\u1ec3 kh\u00f3 v\u1edbi robot nh\u01b0ng con ng\u01b0\u1eddi v\u1eabn c\u00f3 th\u1ec3 x\u00e1c nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n

Re captcha l\u00e0 g\u00ec?<\/h2>\n

\"captcha<\/p>\n

\u0110\u00f4i khi, b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p nh\u1eefng Captcha c\u00f3 \u0111i k\u00e8m c\u00e2u ti\u1ebfng Anh \u201cI\u2019m not a robot\u201d (T\u00f4i kh\u00f4ng ph\u1ea3i robot) tr\u00ean Google<\/a>. Lo\u1ea1i Captcha n\u00e0y s\u1ebd y\u00eau c\u1ea7u b\u1ea1n ph\u1ea3i click v\u00e0o \u00f4 tr\u1ed1ng, k\u00e8m theo l\u00e0 c\u00e1c thao t\u00e1c ch\u1ecdn h\u00ecnh \u1ea3nh theo y\u00eau c\u1ea7u. \u0110\u00f3 ch\u00ednh l\u00e0 Recaptcha.<\/p>\n

M\u1ed9t h\u00ecnh th\u1ee9c Captcha hi\u1ec7n \u0111\u1ea1i gi\u00fap t\u1ed1i \u0111a h\u00f3a c\u00e1c truy c\u1eadp t\u1ef1 \u0111\u1ed9ng c\u1ee7a m\u00e1y t\u00ednh, robot. \u0110\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u c\u00e1c giai \u0111o\u1ea1n, v\u01b0\u1edbng m\u1eafc c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. M\u1ee5c \u0111\u00edch c\u1ee7a reCaptcha v\u1eabn l\u00e0 ph\u00e9p th\u1eed ph\u00e2n bi\u1ec7t con ng\u01b0\u1eddi v\u1edbi robot.<\/p>\n

C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a captcha l\u00e0 g\u00ec?<\/h2>\n

\"captcha<\/p>\n

Ph\u01b0\u01a1ng th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Captcha truy\u1ec1n th\u1ed1ng l\u00e0 b\u1ea1n ph\u1ea3i g\u00f5 l\u1ea1i nh\u1eefng ch\u1eef trong \u00f4 y\u00eau\u00a0 c\u1ea7u nh\u1eadn di\u1ec7n v\u00e0 n\u1ed9p v\u1ec1 chu\u1ed7i gi\u00e1 tr\u1ecb (ch\u1eef, s\u1ed1 ho\u1eb7c c\u1ea3 hai). C\u01a1 ch\u1ebf n\u00e0y s\u1ebd gi\u00fap m\u1ed9t ng\u01b0\u1eddi nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c v\u00e0 t\u1eeb \u0111\u00f3 Google ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c b\u1ea1n l\u00e0 ng\u01b0\u1eddi hay m\u00e1y.<\/p>\n

V\u1edbi m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c d\u1ea1ng Captcha kh\u00e1c nh\u01b0 \u0111\u00e3 n\u00f3i \u1edf tr\u00ean \u0111\u00f3 l\u00e0 reCaptcha th\u00ec thay v\u00e0o vi\u1ec7c nh\u1eadn di\u1ec7n c\u00e1c m\u00e3 kh\u00f3 hi\u1ec3u. B\u1ea1n ch\u1ec9 c\u1ea7n t\u00edch \u0111i\u1ec1n v\u00e0 ch\u1ecdn c\u00e1c \u00f4 c\u00f3 c\u00f9ng ch\u1ee7 \u0111\u1ec1 theo y\u00eau c\u1ea7u.<\/p>\n

M\u1ee5c \u0111\u00edch Captcha l\u00e0 g\u00ec?<\/h3>\n

M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a Captcha nh\u1eb1m \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00f3 con ng\u01b0\u1eddi v\u1edbi c\u00f3 th\u1ec3 tham gia, th\u1ef1c hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng trong h\u1ec7 th\u1ed1ng. Ch\u1ee9 kh\u00f4ng ph\u1ea3i ph\u1ea7n m\u1ec1m t\u1ef1 \u0111\u1ed9ng hay robot \u0111ang th\u1ef1c hi\u1ec7n ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1 nh\u1eb1m t\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c th\u1eadt.<\/p>\n

Vi\u1ec7c x\u00e1c nh\u1eadn m\u00e3 Captcha ch\u00ednh l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c b\u1ea3o v\u1ec7 an ninh c\u1ed5ng d\u1eef li\u1ec7u, th\u00f4ng tin website m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, tr\u00e1nh l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c \u1ea3o.<\/p>\n

T\u1ea1i sao captcha kh\u00f3 \u0111\u1ecdc?<\/h3>\n

N\u1ebfu m\u1ed9t Captcha qu\u00e1 d\u1ec5 nh\u1eadn bi\u1ebft s\u1ebd kh\u00f4ng \u0111em \u0111\u1ebfn hi\u1ec7u qu\u1ea3 b\u1edfi hi\u1ec7n nay c\u00f3 r\u1ea5t nhi\u1ec1u ch\u01b0\u01a1ng tr\u00ecnh m\u00e1y t\u00ednh, ph\u1ea7n m\u1ec1m c\u00f3 kh\u1ea3 n\u0103ng scan \u1ea3nh, \u0111o\u00e1n \u0111\u00fang ch\u1eef s\u1ed1 \u1edf h\u00ecnh th\u1ee9c th\u00f4ng th\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1ec5 cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng trong vi\u1ec7c nh\u1eadn di\u1ec7n m\u00e3 v\u00e0 nh\u1eadp. Nh\u01b0ng l\u1ea1i l\u00e0m l\u1ecfng l\u1ebbo kh\u00f3a an ninh truy c\u1eadp h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u m\u00e0 h\u1ec7 th\u1ed1ng \u0111ang mu\u1ed1n ng\u0103n ch\u1eb7n.<\/p>\n

M\u1eb7c d\u00f9 kh\u00e1 kh\u00f3 \u0111\u1ecdc, nh\u01b0ng theo th\u1ed1ng k\u00ea, con ng\u01b0\u1eddi c\u00f3 kh\u1ea3 n\u0103ng \u0111o\u00e1n. V\u00e0 nh\u1eadp \u0111\u00fang m\u00e3 Captcha \u0111\u1ebfn 80%, tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7 con ng\u01b0\u1eddi ph\u1ea3i nh\u1eadp l\u1ea1i 2, 3 l\u1ea7n do m\u00e3 kh\u00f3 \u0111\u1ecdc. Nh\u01b0ng ch\u1ec9 c\u00f3 kho\u1ea3ng 0,1% kh\u1ea3 n\u0103ng m\u00e1y t\u00ednh l\u1eadp tr\u00ecnh \u0111\u00fang c\u00e1ch v\u00e0 th\u00e0nh c\u00f4ng m\u00e0 th\u00f4i.<\/p>\n

Ti\u1ebfp b\u01b0\u1edbc Captcha, reCaptcha c\u1ee7a Google ch\u00ednh l\u00e0 b\u01b0\u1edbc c\u1ea3i ti\u1ebfn l\u1edbn, t\u0103ng t\u00ednh b\u1ea3o m\u1eadt, an to\u00e0n cho h\u1ec7 th\u1ed1ng h\u01a1n.<\/p>\n

V\u00ec sao n\u00ean s\u1eed d\u1ee5ng Captcha khi thi\u1ebft k\u1ebf website?<\/h2>\n

\"captcha<\/p>\n

S\u1eed d\u1ee5ng captcha khi thi\u1ebft k\u1ebf web gi\u00fap t\u0103ng \u0111\u1ed9 b\u1ea3o m\u1eadt<\/h3>\n

Website c\u00e1 nh\u00e2n, t\u1ed5 ch\u1ee9c, doanh nghi\u1ec7p l\u00e0 n\u01a1i l\u01b0u tr\u1eef kho d\u1eef li\u1ec7u v\u00f4 c\u00f9ng l\u1edbn. B\u1ea1n s\u1ebd kh\u00f3 m\u00e0 t\u01b0\u1edfng t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c n\u1ebfu m\u1ed9t ng\u00e0y h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng truy c\u1eadp hay c\u00e1c con robot c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o website, \u0111\u00e1nh c\u1eb7p d\u1eef li\u1ec7u, l\u0169ng lo\u1ea1n, g\u00e2y nh\u1eefng t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c cho website c\u1ee7a b\u1ea1n. Di\u1ec7n m\u1ea1o c\u1ee7a c\u00e1 nh\u00e2n, \u0111\u01a1n v\u1ecb, c\u00f4ng ty b\u1ecb suy gi\u1ea3m, khi\u1ebfn b\u1ea1n t\u1ed1n th\u1eddi gian, chi ph\u00ed tu s\u1eeda, th\u1eadm ch\u00ed c\u00f3 nh\u1eefng d\u1eef li\u1ec7u b\u1ea1n kh\u00f3 l\u00f2ng m\u00e0 l\u1ea5y l\u1ea1i \u0111\u01b0\u1ee3c.<\/p>\n

S\u1eed d\u1ee5ng captcha khi thi\u1ebft k\u1ebf website t\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c th\u1eadt<\/h3>\n

S\u1eed d\u1ee5ng Captcha khi thi\u1ebft k\u1ebf web gi\u00fap b\u1ea1n t\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c th\u1eadt, lo\u1ea1i b\u1ecf nh\u1eefng t\u01b0\u01a1ng t\u00e1c \u1ea3o.<\/p>\n

T\u01b0\u01a1ng t\u00e1c l\u00e0 y\u1ebfu t\u1ed1 v\u00f4 c\u00f9ng quan tr\u1ecdng m\u00e0 nhi\u1ec1u \u0111\u01a1n v\u1ecb, t\u1ed5 ch\u1ee9c, doanh nghi\u1ec7p h\u01b0\u1edbng t\u1edbi. Nh\u01b0ng n\u1ebfu m\u1ed9t ng\u00e0y \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n b\u1ecb chia c\u00e1ch. Khi\u1ebfn kho\u1ea3ng c\u00e1ch gi\u1eefa b\u1ea1n v\u00e0 kh\u00e1ch h\u00e0ng ng\u00e0y m\u1ed9t xa, th\u00f4ng \u0111i\u1ec7p b\u1ea1n kh\u00f4ng th\u1ec3 g\u1eedi t\u1edbi \u0111\u1ed1i t\u01b0\u1ee3ng. B\u1edfi ph\u1ea7n m\u1ec1m t\u1ef1 \u0111\u1ed9ng hay c\u00e1c robot. Nh\u01b0ng truy c\u1eadp b\u1ea5t h\u1ee3p ph\u00e1p v\u00f4 \u00edch g\u00e2y t\u1ed1n dung l\u01b0\u1ee3ng, b\u0103ng th\u00f4ng. Kinh doanh kh\u00f4ng hi\u1ec7u qu\u1ea3 m\u00e0 c\u00f2n t\u1ed1n k\u00e9m h\u01a1n cho website.<\/p>\n

Ch\u1ed1ng spam v\u00e0 c\u00e1c t\u00e0i kho\u1ea3n t\u1ef1 \u0111\u1ed9ng \u0111\u0103ng b\u00e0i<\/h3>\n

Nhi\u1ec1u nh\u00e0 qu\u1ea3n tr\u1ecb web th\u01b0\u1eddng \u0111au \u0111\u1ea7u b\u1edfi hi\u1ec7n t\u01b0\u1ee3ng spam, \u0111\u0103ng b\u00e0i h\u00e0ng ho\u1ea1t. Nh\u01b0ng n\u1ebfu c\u00f3 Captcha, b\u1ea1n s\u1ebd h\u1ea1n ch\u1ebf \u0111i r\u1ea5t nhi\u1ec1u t\u00ecnh tr\u1ea1ng \u0111\u00f3. Gi\u00fap website, di\u1ec5n \u0111\u00e0n b\u1ea1n v\u0103n minh, trong l\u00e0nh h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n

Captcha c\u00f2n \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0o r\u1ea5t nhi\u1ec1u kh\u00eda c\u1ea1nh kh\u00e1c, c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn nh\u01b0:<\/p>\n

    \n
  • Ng\u0103n ch\u1eb7n spam nh\u1eadn x\u00e9t trong blog.<\/li>\n
  • B\u1ea3o v\u1ec7 \u0111\u1ecba ch\u1ec9 Email.<\/li>\n
  • C\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm bots.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

    Captcha l\u00e0 g\u00ec? T\u00e1c d\u1ee5ng c\u1ee7a captcha \u0111\u1ed1i v\u1edbi website. C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Capcha nh\u01b0 th\u1ebf n\u00e0o? T\u00ecm hi\u1ec3u v\u1edbi b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y. Captcha l\u00e0 g\u00ec? Captcha l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a c\u1ee5m t\u1eeb ti\u1ebfng Anh Completely Automated Public Turing test to tell Computers and Humans Apart. C\u00f3 ngh\u0129a l\u00e0 Ph\u00e9p th\u1eed […]<\/p>\n","protected":false},"author":2,"featured_media":1793,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8],"tags":[164],"class_list":["post-1699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thiet-ke-website","tag-captcha-la-gi"],"jetpack_featured_media_url":"https:\/\/webvocuc.com\/blog\/wp-content\/uploads\/2019\/11\/captcha-la-gi-tac-dung-cua-captcha-doi-voi-website-5.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts\/1699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/comments?post=1699"}],"version-history":[{"count":3,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts\/1699\/revisions"}],"predecessor-version":[{"id":6088,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/posts\/1699\/revisions\/6088"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/media\/1793"}],"wp:attachment":[{"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/media?parent=1699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/categories?post=1699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webvocuc.com\/blog\/wp-json\/wp\/v2\/tags?post=1699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}