{"id":476342,"date":"2023-08-09T07:28:31","date_gmt":"2023-08-09T07:28:31","guid":{"rendered":""},"modified":"2023-09-05T11:12:33","modified_gmt":"2023-09-05T11:12:33","slug":"completely-automated-public-turing-test-to-tell-computers-and-humans-apart-captcha","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/completely-automated-public-turing-test-to-tell-computers-and-humans-apart-captcha\/","title":{"rendered":"B\u00e0i ki\u1ec3m tra Turing c\u00f4ng khai ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u00e2n bi\u1ec7t m\u00e1y t\u00ednh v\u00e0 con ng\u01b0\u1eddi (CAPTCHA)"},"content":{"rendered":"<p>Th\u1eed nghi\u1ec7m Turing c\u00f4ng khai ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u00e2n bi\u1ec7t m\u00e1y t\u00ednh v\u00e0 con ng\u01b0\u1eddi, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 CAPTCHA, l\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh m\u00e1y t\u00ednh (bot) v\u00e0 ng\u01b0\u1eddi d\u00f9ng con ng\u01b0\u1eddi tr\u00ean Internet. CAPTCHA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1ef1 \u0111\u1ed9ng, th\u01b0 r\u00e1c v\u00e0 truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn. H\u1ecd \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch \u0111\u01b0a ra nh\u1eefng th\u00e1ch th\u1ee9c m\u00e0 con ng\u01b0\u1eddi d\u1ec5 gi\u1ea3i quy\u1ebft nh\u01b0ng l\u1ea1i kh\u00f3 \u0111\u1ed1i v\u1edbi m\u00e1y m\u00f3c.<\/p>\n<h2>L\u1ecbch s\u1eed ngu\u1ed3n g\u1ed1c c\u1ee7a CAPTCHA v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 n\u00f3<\/h2>\n<p>CAPTCHA l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u b\u1edfi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u Luis von Ahn, Manuel Blum, Nicholas Hopper v\u00e0 John Langford v\u00e0o n\u0103m 2000. M\u1ee5c \u0111\u00edch c\u1ee7a h\u1ecd l\u00e0 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 bot t\u1ef1 \u0111\u1ed9ng khai th\u00e1c c\u00e1c d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong b\u1ed1i c\u1ea3nh t\u1ea1o t\u00e0i kho\u1ea3n gi\u1ea3 v\u00e0 g\u1eedi bi\u1ec3u m\u1eabu h\u00e0ng lo\u1ea1t. Thu\u1eadt ng\u1eef \u201cCAPTCHA\u201d do Luis von Ahn \u0111\u1eb7t ra, vi\u1ebft t\u1eaft c\u1ee7a \u201cTh\u1eed nghi\u1ec7m Turing c\u00f4ng khai ho\u00e0n to\u00e0n t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u00e2n bi\u1ec7t m\u00e1y t\u00ednh v\u00e0 con ng\u01b0\u1eddi\u201d.<\/p>\n<p>Kh\u00e1i ni\u1ec7m CAPTCHA \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean \u00fd t\u01b0\u1edfng c\u1ee7a Alan Turing v\u1ec1 \u201cth\u1eed nghi\u1ec7m Turing\u201d, \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng c\u1ee7a m\u00e1y trong vi\u1ec7c th\u1ec3 hi\u1ec7n h\u00e0nh vi th\u00f4ng minh kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c v\u1edbi h\u00e0nh vi c\u1ee7a con ng\u01b0\u1eddi. Trong tr\u01b0\u1eddng h\u1ee3p CAPTCHA, m\u1ee5c ti\u00eau l\u00e0 t\u1ea1o ra m\u1ed9t b\u00e0i ki\u1ec3m tra m\u00e0 ch\u1ec9 con ng\u01b0\u1eddi m\u1edbi c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua, t\u1eeb \u0111\u00f3 ng\u0103n ch\u1eb7n c\u00e1c bot t\u1ef1 \u0111\u1ed9ng truy c\u1eadp.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 CAPTCHA: M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1<\/h2>\n<p>CAPTCHA ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean ti\u1ec1n \u0111\u1ec1 r\u1eb1ng m\u1ed9t s\u1ed1 t\u00e1c v\u1ee5 nh\u1ea5t \u0111\u1ecbnh \u0111\u01a1n gi\u1ea3n \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi nh\u01b0ng kh\u00f3 th\u1ef1c hi\u1ec7n ch\u00ednh x\u00e1c \u0111\u1ed1i v\u1edbi m\u00e1y t\u00ednh. Nh\u1eefng nhi\u1ec7m v\u1ee5 n\u00e0y c\u00f3 th\u1ec3 l\u00e0 th\u1ecb gi\u00e1c ho\u1eb7c th\u00ednh gi\u00e1c v\u00e0 ch\u00fang khai th\u00e1c c\u00e1c kh\u1ea3 n\u0103ng nh\u1eadn th\u1ee9c c\u1ee7a con ng\u01b0\u1eddi nh\u01b0 nh\u1eadn d\u1ea1ng m\u1eabu, hi\u1ec3u b\u1ed1i c\u1ea3nh v\u00e0 gi\u1ea3i c\u00e2u \u0111\u1ed1.<\/p>\n<p>CAPTCHA th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn v\u0103n b\u1ea3n ho\u1eb7c h\u00ecnh \u1ea3nh b\u1ecb bi\u1ebfn d\u1ea1ng, th\u1eed th\u00e1ch \u00e2m thanh ho\u1eb7c k\u1ebft h\u1ee3p c\u1ea3 hai. Ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u nh\u1eadp c\u00e2u tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c \u0111\u1ec3 ch\u1ee9ng minh danh t\u00ednh con ng\u01b0\u1eddi c\u1ee7a h\u1ecd. \u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a CAPTCHA c\u00f3 th\u1ec3 kh\u00e1c nhau, t\u1eeb nh\u1eefng th\u1eed th\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u01b0 x\u00e1c \u0111\u1ecbnh \u0111\u1ed1i t\u01b0\u1ee3ng trong h\u00ecnh \u1ea3nh cho \u0111\u1ebfn nh\u1eefng th\u1eed th\u00e1ch ph\u1ee9c t\u1ea1p h\u01a1n \u0111\u00f2i h\u1ecfi ph\u1ea3i gi\u1ea3i c\u00e1c c\u00e2u \u0111\u1ed1 to\u00e1n h\u1ecdc.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a CAPTCHA: C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a CAPTCHA<\/h2>\n<p>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a CAPTCHA bao g\u1ed3m ba th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>Th\u1ebf h\u1ec7<\/strong>: CAPTCHA \u0111\u01b0\u1ee3c t\u1ea1o b\u1eb1ng thu\u1eadt to\u00e1n t\u1ea1o c\u00e1c t\u1ec7p \u00e2m thanh ho\u1eb7c h\u00ecnh \u1ea3nh ng\u1eabu nhi\u00ean, b\u1ecb b\u00f3p m\u00e9o. C\u00e1c thu\u1eadt to\u00e1n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c th\u00e1ch th\u1ee9c kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc \u0111\u01b0\u1ee3c v\u00e0 kh\u00f3 gi\u1ea3i quy\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c bot t\u1ef1 \u0111\u1ed9ng.<\/p>\n<\/li>\n<li>\n<p><strong>B\u00e0i thuy\u1ebft tr\u00ecnh<\/strong>: C\u00e1c th\u1eed th\u00e1ch CAPTCHA \u0111\u01b0\u1ee3c t\u1ea1o sau \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb cho ng\u01b0\u1eddi d\u00f9ng tr\u00ean c\u00e1c trang web trong qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd, \u0111\u0103ng nh\u1eadp ho\u1eb7c khi truy c\u1eadp m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng nh\u1ea5t \u0111\u1ecbnh. Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c th\u1eed th\u00e1ch \u0111\u1ec3 ti\u1ebfp t\u1ee5c.<\/p>\n<\/li>\n<li>\n<p><strong>x\u00e1c minh<\/strong>: Sau khi ng\u01b0\u1eddi d\u00f9ng g\u1eedi c\u00e2u tr\u1ea3 l\u1eddi, h\u1ec7 th\u1ed1ng s\u1ebd so s\u00e1nh c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00f3 v\u1edbi c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang. N\u1ebfu ph\u1ea3n h\u1ed3i ph\u00f9 h\u1ee3p v\u1edbi gi\u1ea3i ph\u00e1p mong \u0111\u1ee3i, ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c coi l\u00e0 con ng\u01b0\u1eddi v\u00e0 quy\u1ec1n truy c\u1eadp s\u1ebd \u0111\u01b0\u1ee3c c\u1ea5p. N\u1ebfu kh\u00f4ng, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u th\u1eed l\u1ea1i ho\u1eb7c tr\u1ea3i qua quy tr\u00ecnh x\u00e1c minh thay th\u1ebf.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a CAPTCHA<\/h2>\n<p>CAPTCHA cung c\u1ea5p m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh gi\u00fap ch\u00fang ph\u00e2n bi\u1ec7t con ng\u01b0\u1eddi v\u1edbi bot m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ea3o v\u1ec7<\/strong>: CAPTCHA cung c\u1ea5p m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt b\u1ed5 sung, ng\u0103n ch\u1eb7n c\u00e1c bot t\u1ef1 \u0111\u1ed9ng th\u1ef1c hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i tr\u00ean c\u00e1c trang web.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00f9y ch\u1ec9nh<\/strong>: Qu\u1ea3n tr\u1ecb vi\u00ean trang web c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh CAPTCHA \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u b\u1ea3o m\u1eadt c\u1ee5 th\u1ec3 c\u1ee7a h\u1ecd. T\u00ednh linh ho\u1ea1t n\u00e0y cho ph\u00e9p h\u1ecd th\u00edch \u1ee9ng v\u1edbi c\u00e1c m\u1ee9c \u0111\u1ed9 \u0111e d\u1ecda kh\u00e1c nhau.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng<\/strong>: CAPTCHA \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf th\u00e2n thi\u1ec7n v\u1edbi ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra m\u00e0 kh\u00f4ng g\u1eb7p nhi\u1ec1u kh\u00f3 kh\u0103n.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng<\/strong>: CAPTCHA \u0111\u00e3 ph\u00e1t tri\u1ec3n theo th\u1eddi gian \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e2ng cao c\u1ee7a bot. Khi c\u00e1c bot tr\u1edf n\u00ean th\u00f4ng minh h\u01a1n, CAPTCHA c\u0169ng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n \u0111\u1ec3 lu\u00f4n d\u1eabn \u0111\u1ea7u.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i CAPTCHA<\/h2>\n<p>CAPTCHA c\u00f3 nhi\u1ec1u lo\u1ea1i kh\u00e1c nhau, m\u1ed7i lo\u1ea1i s\u1eed d\u1ee5ng nh\u1eefng th\u00e1ch th\u1ee9c kh\u00e1c nhau \u0111\u1ec3 ph\u00e2n bi\u1ec7t con ng\u01b0\u1eddi v\u1edbi bot. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i CAPTCHA ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>CAPTCHA d\u1ef1a tr\u00ean h\u00ecnh \u1ea3nh<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1ed3 v\u1eadt, ch\u1ecdn h\u00ecnh \u1ea3nh c\u1ee5 th\u1ec3 ho\u1eb7c gi\u1ea3i c\u00e1c c\u00e2u \u0111\u1ed1 li\u00ean quan \u0111\u1ebfn h\u00ecnh \u1ea3nh.<\/td>\n<\/tr>\n<tr>\n<td>CAPTCHA d\u1ef1a tr\u00ean v\u0103n b\u1ea3n<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i nh\u1eadp v\u0103n b\u1ea3n b\u1ecb bi\u1ebfn d\u1ea1ng hi\u1ec3n th\u1ecb trong h\u00ecnh \u1ea3nh, khi\u1ebfn bot kh\u00f3 nh\u1eadn ra.<\/td>\n<\/tr>\n<tr>\n<td>CAPTCHA d\u1ef1a tr\u00ean \u00e2m thanh<\/td>\n<td>Thay v\u00ec th\u1eed th\u00e1ch tr\u1ef1c quan, ng\u01b0\u1eddi d\u00f9ng nghe \u00e2m thanh b\u1ecb b\u00f3p m\u00e9o v\u00e0 g\u00f5 c\u00e1c t\u1eeb ho\u1eb7c s\u1ed1 \u0111\u01b0\u1ee3c n\u00f3i.<\/td>\n<\/tr>\n<tr>\n<td>CAPTCHA to\u00e1n h\u1ecdc<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n s\u1ed1 h\u1ecdc \u0111\u01a1n gi\u1ea3n ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc \u0111\u1ec3 ch\u1ee9ng minh danh t\u00ednh con ng\u01b0\u1eddi c\u1ee7a h\u1ecd.<\/td>\n<\/tr>\n<tr>\n<td>CAPTCHA h\u00e0nh vi<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 chuy\u1ec3n \u0111\u1ed9ng chu\u1ed9t nh\u1ea5t \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 k\u00e9o v\u00e0 th\u1ea3, \u0111\u1ec3 th\u1ec3 hi\u1ec7n h\u00e0nh vi c\u1ee7a con ng\u01b0\u1eddi.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng CAPTCHA, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>CAPTCHA \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u t\u00ecnh hu\u1ed1ng tr\u1ef1c tuy\u1ebfn kh\u00e1c nhau, bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>\u0110\u0103ng k\u00fd ng\u01b0\u1eddi d\u00f9ng<\/strong>: CAPTCHA ng\u0103n bot t\u1ea1o nhi\u1ec1u t\u00e0i kho\u1ea3n gi\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o m\u1eadt \u0111\u0103ng nh\u1eadp<\/strong>: Ch\u00fang b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1ea1o l\u1ef1c tr\u00ean c\u00e1c trang \u0111\u0103ng nh\u1eadp.<\/p>\n<\/li>\n<li>\n<p><strong>Bi\u1ec3u m\u1eabu li\u00ean h\u1ec7<\/strong>: CAPTCHA gi\u00fap gi\u1ea3m vi\u1ec7c g\u1eedi th\u01b0 r\u00e1c tr\u00ean c\u00e1c bi\u1ec3u m\u1eabu li\u00ean h\u1ec7.<\/p>\n<\/li>\n<li>\n<p><strong>Th\u0103m d\u00f2 tr\u1ef1c tuy\u1ebfn<\/strong>: CAPTCHA ng\u0103n ch\u1eb7n nhi\u1ec1u phi\u1ebfu b\u1ea7u t\u1ef1 \u0111\u1ed9ng trong c\u00e1c cu\u1ed9c th\u0103m d\u00f2 v\u00e0 kh\u1ea3o s\u00e1t.<\/p>\n<\/li>\n<\/ol>\n<p>M\u1eb7c d\u00f9 c\u00f3 hi\u1ec7u qu\u1ea3 nh\u01b0ng CAPTCHA v\u1eabn g\u1eb7p ph\u1ea3i m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c:<\/p>\n<ul>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng<\/strong>: CAPTCHA kh\u00f3 c\u00f3 th\u1ec3 khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng th\u1ea5t v\u1ecdng, d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng m\u1ea5t kh\u00e1ch h\u00e0ng.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn<\/strong>: CAPTCHA c\u00f3 th\u1ec3 l\u00e0 th\u00e1ch th\u1ee9c \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi khuy\u1ebft t\u1eadt, ch\u1eb3ng h\u1ea1n nh\u01b0 ng\u01b0\u1eddi d\u00f9ng khi\u1ebfm th\u1ecb.<\/p>\n<\/li>\n<li>\n<p><strong>Bot n\u00e2ng cao<\/strong>: Khi c\u00e1c bot tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p h\u01a1n, \u0111\u00f4i khi ch\u00fang c\u00f3 th\u1ec3 b\u1ecf qua m\u1ed9t s\u1ed1 lo\u1ea1i CAPTCHA nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<\/li>\n<\/ul>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li>\n<p><strong>CAPTCHA v\u00f4 h\u00ecnh<\/strong>: Nh\u1eefng th\u1eed th\u00e1ch \u1ea9n kh\u00f4ng c\u1ea7n s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, d\u1ef1a tr\u00ean ph\u00e2n t\u00edch h\u00e0nh vi.<\/p>\n<\/li>\n<li>\n<p><strong>reCAPTCHA<\/strong>: H\u1ec7 th\u1ed1ng CAPTCHA ti\u00ean ti\u1ebfn c\u1ee7a Google s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 h\u1ecdc m\u00e1y \u0111\u1ec3 ph\u00e2n bi\u1ec7t bot v\u1edbi con ng\u01b0\u1eddi.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a CAPTCHA v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef li\u00ean quan:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c tr\u01b0ng<\/th>\n<th>M\u00c3 NG\u1eaaU NHI\u00caN<\/th>\n<th>reCAPTCHA<\/th>\n<th>H\u0169 m\u1eadt ong<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M\u1ee5c \u0111\u00edch<\/td>\n<td>Ph\u00e2n bi\u1ec7t bot v\u1edbi con ng\u01b0\u1eddi<\/td>\n<td>Ph\u00e2n bi\u1ec7t bot v\u1edbi con ng\u01b0\u1eddi<\/td>\n<td>B\u1eaby bot m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 can thi\u1ec7p c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>T\u01b0\u01a1ng t\u00e1c ng\u01b0\u1eddi d\u00f9ng<\/td>\n<td>Y\u00eau c\u1ea7u ph\u1ea3n h\u1ed3i c\u1ee7a ng\u01b0\u1eddi d\u00f9ng t\u00edch c\u1ef1c<\/td>\n<td>Y\u00eau c\u1ea7u ph\u1ea3n h\u1ed3i c\u1ee7a ng\u01b0\u1eddi d\u00f9ng t\u00edch c\u1ef1c<\/td>\n<td>Kh\u00f4ng c\u1ea7n t\u01b0\u01a1ng t\u00e1c ng\u01b0\u1eddi d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 ph\u1ee9c t\u1ea1p<\/td>\n<td>Kh\u00e1c nhau t\u1eeb nh\u1eefng th\u00e1ch th\u1ee9c \u0111\u01a1n gi\u1ea3n \u0111\u1ebfn ph\u1ee9c t\u1ea1p<\/td>\n<td>H\u1ecdc m\u00e1y n\u00e2ng cao c\u00f3 li\u00ean quan<\/td>\n<td>Nh\u1eefng th\u1eed th\u00e1ch t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn<\/td>\n<td>C\u00f3 th\u1ec3 \u0111\u1eb7t ra th\u00e1ch th\u1ee9c cho m\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng<\/td>\n<td>C\u1ea3i thi\u1ec7n t\u00ednh n\u0103ng tr\u1ee3 n\u0103ng<\/td>\n<td>Kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/td>\n<\/tr>\n<tr>\n<td>C\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn<\/td>\n<td>S\u1ef1 ph\u00e1t tri\u1ec3n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a bot<\/td>\n<td>S\u1eed d\u1ee5ng kh\u1ea3 n\u0103ng AI c\u1ee7a Google<\/td>\n<td>Kh\u00f4ng d\u1ef1a v\u00e0o c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn CAPTCHA<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, CAPTCHA s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c bot tinh vi h\u01a1n v\u00e0 c\u1ea3i thi\u1ec7n tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 v\u00e0 quan \u0111i\u1ec3m ti\u1ec1m n\u0103ng trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn CAPTCHA bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>CAPTCHA sinh tr\u1eafc h\u1ecdc<\/strong>: S\u1eed d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng sinh tr\u1eafc h\u1ecdc nh\u01b0 nh\u1eadn d\u1ea1ng khu\u00f4n m\u1eb7t ho\u1eb7c x\u00e1c minh d\u1ea5u v\u00e2n tay \u0111\u1ec3 nh\u1eadn d\u1ea1ng con ng\u01b0\u1eddi.<\/p>\n<\/li>\n<li>\n<p><strong>Sinh tr\u1eafc h\u1ecdc h\u00e0nh vi<\/strong>: Ph\u00e2n t\u00edch h\u00e0nh vi c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 ki\u1ec3u g\u00f5 v\u00e0 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a chu\u1ed9t, \u0111\u1ec3 x\u00e1c minh ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00f9y ch\u1ec9nh th\u1eed th\u00e1ch<\/strong>: CAPTCHA do AI \u0111i\u1ec1u khi\u1ec3n th\u00edch \u1ee9ng v\u1edbi kh\u1ea3 n\u0103ng c\u1ee7a t\u1eebng ng\u01b0\u1eddi d\u00f9ng, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean th\u00e2n thi\u1ec7n h\u01a1n v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<\/li>\n<li>\n<p><strong>CAPTCHA d\u1ef1a tr\u00ean chu\u1ed7i kh\u1ed1i<\/strong>: S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 blockchain \u0111\u1ec3 x\u00e1c minh phi t\u1eadp trung v\u00e0 ch\u1ed1ng gi\u1ea3 m\u1ea1o.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi CAPTCHA<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn CAPTCHA, c\u1ea3 t\u1eeb g\u00f3c \u0111\u1ed9 b\u1ea3o m\u1eadt v\u00e0 \u0111\u1ea3m b\u1ea3o quy\u1ec1n truy c\u1eadp kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n cho ng\u01b0\u1eddi d\u00f9ng. M\u1ed9t s\u1ed1 c\u00e1ch c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi CAPTCHA l\u00e0:<\/p>\n<ol>\n<li>\n<p><strong>B\u1ea3o v\u1ec7 bot<\/strong>: M\u00e1y ch\u1ee7 proxy gi\u00fap ng\u0103n ch\u1eb7n bot truy c\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o c\u00e1c trang web v\u00ec ch\u00fang \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 web. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m nguy c\u01a1 b\u1ecb t\u1ea5n c\u00f4ng t\u1ef1 \u0111\u1ed9ng.<\/p>\n<\/li>\n<li>\n<p><strong>Xoay v\u00f2ng IP<\/strong>: M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 xoay \u0111\u1ecba ch\u1ec9 IP, khi\u1ebfn c\u00e1c trang web g\u1eb7p kh\u00f3 kh\u0103n h\u01a1n trong vi\u1ec7c ph\u00e1t hi\u1ec7n v\u00e0 ch\u1eb7n h\u00e0nh vi \u0111\u00e1ng ng\u1edd ho\u1eb7c gi\u1ed1ng bot.<\/p>\n<\/li>\n<li>\n<p><strong>V\u01b0\u1ee3t qua gi\u1edbi h\u1ea1n \u0111\u1ecba l\u00fd<\/strong>: Proxy cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp n\u1ed9i dung \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 CAPTCHA t\u1eeb c\u00e1c v\u1ecb tr\u00ed \u0111\u1ecba l\u00fd kh\u00e1c nhau, b\u1ecf qua m\u1ecdi h\u1ea1n ch\u1ebf khu v\u1ef1c.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i<\/strong>: Proxy c\u00f3 th\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp tr\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7, gi\u00fap c\u00e1c trang web x\u1eed l\u00fd c\u00e1c y\u00eau c\u1ea7u CAPTCHA m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 trong th\u1eddi gian cao \u0111i\u1ec3m.<\/p>\n<\/li>\n<\/ol>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 CAPTCHA, b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/CAPTCHA\" target=\"_new\" rel=\"noopener nofollow\">Wikipedia \u2013 CAPTCHA<\/a><\/li>\n<li><a href=\"https:\/\/www.google.com\/recaptcha\" target=\"_new\" rel=\"noopener nofollow\">Google reCAPTCHA<\/a><\/li>\n<li><a href=\"https:\/\/www.researchgate.net\/publication\/316620467_The_Evolution_of_CAPTCHA_Trends_and_Challenges\" target=\"_new\" rel=\"noopener nofollow\">S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a CAPTCHA: Xu h\u01b0\u1edbng v\u00e0 th\u00e1ch th\u1ee9c (B\u00e0i nghi\u00ean c\u1ee9u)<\/a><\/li>\n<\/ol>\n<p>T\u00f3m l\u1ea1i, CAPTCHA l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong vi\u1ec7c b\u1ea3o v\u1ec7 c\u00e1c trang web v\u00e0 d\u1ecbch v\u1ee5 tr\u1ef1c tuy\u1ebfn kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng c\u1ee7a bot t\u1ef1 \u0111\u1ed9ng. Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, CAPTCHA c\u00f3 th\u1ec3 s\u1ebd ph\u00e1t tri\u1ec3n v\u00e0 k\u1ebft h\u1ee3p c\u00e1c k\u1ef9 thu\u1eadt x\u00e1c minh ph\u1ee9c t\u1ea1p h\u01a1n, \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng an to\u00e0n v\u00e0 li\u1ec1n m\u1ea1ch tr\u00ean internet. M\u1eb7t kh\u00e1c, m\u00e1y ch\u1ee7 proxy b\u1ed5 sung CAPTCHA b\u1eb1ng c\u00e1ch th\u00eam m\u1ed9t l\u1edbp b\u1ea3o v\u1ec7 b\u1ed5 sung v\u00e0 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp n\u1ed9i dung t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u r\u1ee7i ro ti\u1ec1m \u1ea9n.<\/p>","protected":false},"featured_media":467926,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476342","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA)<\/mark>","faq_items":[{"question":"What is CAPTCHA and why is it important for websites?","answer":"<p>CAPTCHA stands for Completely Automated Public Turing Test to Tell Computers and Humans Apart. It is a security measure used by websites to distinguish between human users and automated bots. CAPTCHA is essential for websites because it helps prevent bots from performing malicious activities, such as creating fake accounts, submitting spam, or launching brute-force attacks on login pages. By using CAPTCHA, websites can enhance their security and protect user data.<\/p>"},{"question":"How does CAPTCHA work?","answer":"<p>CAPTCHA presents challenges that are easy for humans to solve but difficult for bots. These challenges can be visual, such as identifying objects in images, or auditory, where users listen to distorted audio and type the spoken words. When users respond to the challenges, the system verifies their responses to determine if they are human. If the response matches the expected solution, the user is granted access.<\/p>"},{"question":"What are the main types of CAPTCHA?","answer":"<p>CAPTCHA comes in various types, including image-based, text-based, audio-based, mathematical, and behavioral CAPTCHAs. Image-based CAPTCHAs require users to identify objects or solve puzzles related to images. Text-based CAPTCHAs present distorted text for users to enter correctly. Audio-based CAPTCHAs use distorted audio for users to type the spoken words. Mathematical CAPTCHAs involve solving simple arithmetic problems, while behavioral CAPTCHAs analyze user mouse movements.<\/p>"},{"question":"Can CAPTCHA be a hindrance for users?","answer":"<p>While CAPTCHA enhances security, it can sometimes be a hindrance for users, particularly if the challenges are too complex or unclear. Difficult CAPTCHAs may frustrate users and potentially lead to customer loss. Additionally, CAPTCHAs can be challenging for users with disabilities, such as visually impaired individuals, as they rely heavily on visual or auditory interactions. However, efforts are being made to improve CAPTCHA accessibility and user-friendliness.<\/p>"},{"question":"How are proxy servers associated with CAPTCHA?","answer":"<p>Proxy servers play a vital role in relation to CAPTCHA and website security. They act as intermediaries between users and web servers, preventing direct access by bots. Proxy servers can rotate IP addresses, making it difficult for websites to detect and block suspicious activities. Additionally, they enable users to bypass geo-restrictions and ensure a seamless browsing experience while ensuring CAPTCHA verification is upheld.<\/p>"},{"question":"What does the future hold for CAPTCHA technology?","answer":"<p>As technology continues to advance, CAPTCHA is expected to evolve further. Future CAPTCHA technologies may include the integration of biometric features, behavioral biometrics, and AI-driven challenges that adapt to individual user capabilities. Blockchain-based CAPTCHA solutions may also emerge to offer decentralized and tamper-proof verification methods. The future of CAPTCHA holds promising advancements in security and user experience.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476342","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476342\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/467926"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}