{"id":13606,"date":"2019-10-16T16:49:52","date_gmt":"2019-10-16T16:49:52","guid":{"rendered":"https:\/\/adsplus.vn\/blog\/?p=13606"},"modified":"2019-10-16T16:49:52","modified_gmt":"2019-10-16T16:49:52","slug":"captcha-la-gi-tai-sao-ban-phai-thuc-hien-go-dung-lenh-captcha","status":"publish","type":"post","link":"https:\/\/adsplus.vn\/blog\/captcha-la-gi-tai-sao-ban-phai-thuc-hien-go-dung-lenh-captcha","title":{"rendered":"Captcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n g\u00f5 \u0111\u00fang l\u1ec7nh Captcha"},"content":{"rendered":"

Captcha xu\u1ea5t hi\u1ec7n kh\u00e1 nhi\u1ec1u tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng \u0111i\u1ec7n t\u1eed nh\u01b0 c\u00e1c di\u1ec5n \u0111\u00e0n, website\u2026 khi b\u1ea1n \u0111\u0103ng k\u00fd, \u0111\u0103ng nh\u1eadp hay th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ec7nh n\u00e0o \u0111\u00f3. Nh\u01b0ng t\u1ea1i sao b\u1ea1n ph\u1ea3i g\u00f5 ch\u00ednh x\u00e1c ch\u00fang? C\u00f9ng t\u00ecm hi\u1ec3u Captcha l\u00e0 g\u00ec trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y!<\/span><\/p>\n

\"captcha<\/span><\/p>\n

Captcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n g\u00f5 \u0111\u00fang l\u1ec7nh Captcha<\/em><\/span><\/p>\n

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

Captcha l\u00e0 h\u00ecnh \u1ea3nh c\u00f3 ch\u1ee9a m\u1ed9t \u0111o\u1ea1n m\u00e3 bao g\u1ed3m 5 ch\u1eef ho\u1eb7c s\u1ed1 li\u1ec1n k\u1ec1 hay m\u1ed9t c\u1ee5m t\u1eeb n\u00e0o \u0111\u00f3, ho\u1eb7c h\u00ecnh \u1ea3nh nh\u01b0ng ch\u00fang s\u1ebd kh\u00e1 kh\u00f3 th\u1ea5y do s\u1eafp x\u1ebfp kh\u00f4ng theo h\u00e0ng l\u1ed1i ho\u1eb7c c\u1ed1 t\u00ecnh l\u00e0m m\u00e9o m\u00f3 \u0111i \u0111\u1ec3 kh\u00f3 \u0111\u1ecdc h\u01a1n. \u0110\u00e2y ch\u00ednh l\u00e0 b\u00e0i ki\u1ec3m tra v\u1ec1 m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c trong ph\u1ea3n h\u1ed3i nh\u1eb1m ph\u00e2n bi\u1ec7t ng\u01b0\u1eddi d\u00f9ng l\u00e0 con ng\u01b0\u1eddi hay robot n\u00e0o \u0111\u00f3 \u0111ang c\u1ed1 g\u1eafng truy c\u1eadp v\u00e0o trang web.<\/span><\/p>\n

Captcha ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/b><\/span><\/h2>\n

M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c hi\u1ec3n th\u1ecb captcha n\u00e0y l\u00e0 \u0111\u1ec3 ph\u00e2n bi\u1ec7t v\u00e0 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp l\u00e0 ng\u01b0\u1eddi th\u1eadt ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c ph\u1ea7n m\u1ec1m, malware \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh s\u1eb5n \u0111\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o ph\u00e1 h\u1ec7 th\u1ed1ng. \u0110\u1ed1i v\u1edbi c\u00e1c malware y\u1ebfu ho\u1eb7c c\u00e1c truy c\u1eadp b\u1ea5t h\u1ee3p ph\u00e1p \u1edf m\u1ee9c \u0111\u1ed9 y\u1ebfu th\u00ec s\u1ebd th\u01b0\u1eddng b\u1ecb d\u1eebng l\u1ea1i \u1edf b\u01b0\u1edbc x\u00e1c nh\u1eadn captcha v\u00ec kh\u00f4ng th\u1ec3 hi\u1ec3u hay nh\u1eadn di\u1ec7n c\u00e1c h\u00ecnh \u1ea3nh.<\/span><\/p>\n

Captcha th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1c c\u00f4ng l\u1edbn v\u1ec1 c\u00f4ng ngh\u1ec7 s\u1eed d\u1ee5ng nh\u01b0 Google nh\u1eb1m ng\u0103n ch\u1eb7n nh\u1eefng c\u00fa click c\u1ea3o t\u1ef1 \u0111\u1ed9ng t\u1eeb c\u00e1c thi\u1ebft b\u1ecb m\u00e1y t\u00ednh, robot nh\u1eb1m t\u0103ng l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u00e1c th\u1eadt tr\u00ean tr\u00ecnh duy\u1ec7t c\u1ee7a m\u00ecnh.\u00a0<\/span><\/p>\n

Theo th\u1ed1ng k\u00ea m\u1edbi nh\u1ea5t th\u00ec kh\u1ea3 n\u0103ng con ng\u01b0\u1eddi s\u1ebd g\u00f5 m\u00e3 captcha \u0111\u00fang v\u1edbi 80%, c\u00f2n m\u00e1y m\u00f3c kh\u00f4ng \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u0111\u00fang mu\u1ed1n x\u00e2m nh\u1eadp th\u00ec kh\u1ea3 n\u0103ng th\u00e0nh c\u00f4ng ch\u1ec9 l\u00e0 0,1%.<\/span><\/p>\n

C\u00f3 th\u1ec3 n\u00f3i x\u00e1c nh\u1eadn captcha c\u0169ng l\u00e0 m\u1ed9t trong c\u00e1c h\u00ecnh th\u1ee9c b\u1ea3o v\u1ec7 cho c\u1ed5ng d\u1eef li\u1ec7u, th\u00f4ng tin tr\u00ean c\u00e1c website c\u1ee7a b\u1ea1n. C\u00e1c captcha hi\u1ec7n \u0111\u1ea1i th\u1eddi nay c\u00f2n gi\u00fap t\u1ed1i \u0111a h\u00f3a vi\u1ec7c ng\u0103n ch\u1eb7n s\u1ef1 truy c\u1eadp t\u1ef1 \u0111\u1ed9ng c\u1ee7a m\u00e1y t\u00ednh v\u00e0 robot, \u0111\u1ed3ng th\u1eddi l\u00e0m gi\u1ea3m thi\u1ec3u nh\u1eefng quy tr\u00ecnh v\u00e0 s\u1ef1 kh\u00f3 kh\u0103n ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i tr\u1ea3i qua.<\/span><\/p>\n

T\u1ea1i sao website n\u00ean s\u1eed d\u1ee5ng m\u00e3 captcha?<\/b><\/span><\/h2>\n

Captcha ng\u00e0y c\u00e0ng \u0111\u01b0\u1ee3c d\u00f9ng nhi\u1ec1u trong c\u00e1c h\u1ec7 th\u1ed1ng b\u1ea3o m\u1eadt, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi c\u00e1c k\u00eanh s\u1edf h\u1eefu c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1edbn c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 nh\u01b0 website th\u00ec captcha xu\u1ea5t hi\u1ec7n nh\u01b0 m\u1ed9t y\u1ebfu t\u1ed1 hi\u1ec3n nhi\u00ean.<\/span><\/p>\n

\"captcha<\/span><\/p>\n

Captcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n g\u00f5 \u0111\u00fang l\u1ec7nh Captcha<\/em><\/span><\/p>\n

\u0110\u1ea3m b\u1ea3o t\u01b0\u01a1ng t\u00e1c th\u1eadt<\/b><\/span><\/h3>\n

Trong website th\u00ec t\u01b0\u01a1ng t\u00e1c v\u1edbi ng\u01b0\u1eddi d\u00f9ng l\u00e0 \u0111i\u1ec1u c\u01a1 b\u1ea3n v\u00e0 c\u0169ng l\u00e0 m\u1ee5c ti\u00eau quan tr\u1ecdng h\u00e0ng \u0111\u1ea7u \u0111\u01b0\u1ee3c nhi\u1ec1u doanh nghi\u1ec7p h\u01b0\u1edbng \u0111\u1ebfn. Tuy nhi\u00ean s\u1ebd ra sao n\u1ebfu l\u01b0\u1ee3ng kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n ch\u1ec9 l\u00e0 nh\u1eefng con robot t\u1ef1 \u0111\u1ed9ng. C\u00e1c truy c\u1eadp b\u1ea5t h\u1ee3p ph\u00e1p n\u00e0y s\u1ebd kh\u00f4ng mang l\u1ea1i l\u1ee3i \u00edch g\u00ec cho website c\u1ee7a b\u1ea1n c\u1ea3. Do \u0111\u00f3 m\u00e0 Captcha s\u1ebd \u0111\u1ea3m b\u1ea3o ch\u1eafc ch\u1eafn \u0111\u1ed1i t\u01b0\u1ee3ng truy c\u1eadp v\u00e0o website c\u1ee7a b\u1ea1n ch\u00ednh l\u00e0 ng\u01b0\u1eddi th\u1eadt –\u00a0 nh\u1eefng kh\u00e1ch h\u00e0ng ti\u1ec1m n\u0103ng.<\/span><\/p>\n

\u0110\u1ea3m b\u1ea3o an ninh, b\u1ea3o m\u1eadt<\/b><\/span><\/h3>\n

B\u1ea1n s\u1ebd kh\u00f4ng bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1c h\u1ec7 th\u1ed1ng truy c\u1eadp t\u1ef1 \u0111\u1ed9ng sau khi truy c\u1eadp v\u00e0o web c\u1ee7a b\u1ea1n s\u1ebd l\u00e0m g\u00ec ti\u1ebfp theo. Nh\u1eefng robot \u0111\u1ed9c h\u1ea1i c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra r\u1ee7i ro r\u1ea5t l\u1edbn cho web, do \u0111\u00f3 m\u00e0 captcha s\u1ebd ng\u0103n ch\u1eb7n \u0111i\u1ec1u n\u00e0y.<\/span><\/p>\n

Ch\u1ed1ng spam, t\u1ea1o t\u00e0i kho\u1ea3n t\u1ef1 \u0111\u1ed9ng<\/b><\/span><\/h3>\n

Nhi\u1ec1u nh\u00e0 ph\u00e1t tri\u1ec3n web, qu\u1ea3n l\u00fd di\u1ec5n \u0111\u00e0n t\u1eebng r\u1ea5t \u0111au \u0111\u1ea7u tr\u01b0\u1edbc t\u00ecnh tr\u1ea1ng spam, th\u1ef1c hi\u1ec7n \u0111\u0103ng b\u00e0i ho\u1eb7c spam t\u00e0i kho\u1ea3n h\u00e0ng lo\u1ea1t. S\u1eed d\u1ee5ng Captcha c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y.<\/span><\/p>\n

C\u00e1c \u1ee9ng d\u1ee5ng CAPTCHA ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<\/b><\/span><\/h3>\n

Hi\u1ec7n nay c\u00e1c \u1ee9ng d\u1ee5ng captcha ph\u1ed5 bi\u1ebfn hi\u1ec7n nay nh\u01b0:<\/span><\/p>\n

    \n
  • B\u1ea3o v\u1ec7 email kh\u1ecfi scammers.<\/span><\/li>\n
  • B\u1ea3o v\u1ec7 vi\u1ec7c \u0111\u0103ng k\u00fd t\u00e0i kho\u1ea3n website c\u1ee7a b\u1ea1n.<\/span><\/li>\n
  • B\u1ea3o v\u1ec7 kh\u1ea3o s\u00e1t tr\u1ef1c tuy\u1ebfn.<\/span><\/li>\n
  • Ng\u0103n ch\u1eb7n email worms\/junk mail<\/span><\/li>\n
  • Ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb \u0111i\u1ec3n<\/span><\/li>\n
  • Ng\u0103n ch\u1eb7n spam b\u00ecnh lu\u1eadn tr\u00ean blog<\/span><\/li>\n<\/ul>\n

    \"captcha<\/span><\/p>\n

    Captcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n g\u00f5 \u0111\u00fang l\u1ec7nh Captcha<\/em><\/span><\/p>\n

    C\u00e1ch gi\u1eef m\u00e3 Captcha an to\u00e0n<\/b><\/span><\/h3>\n
      \n
    • D\u00f9ng h\u00ecnh \u1ea3nh an to\u00e0n: M\u00e3 captcha n\u00e0y d\u00f9ng h\u00ecnh \u1ea3nh b\u00f3p m\u00e9o ng\u1eabu nhi\u00ean khi hi\u1ec3n th\u1ecb ng\u01b0\u1eddi d\u00f9ng. V\u1edbi c\u00e1c bi\u1ebfn d\u1ea1ng nh\u1ecf, h\u00ecnh \u1ea3nh d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng t\u1ef1 \u0111\u1ed9ng h\u01a1n.<\/span><\/li>\n
    • D\u00f9ng captcha \u0111\u1ed9c \u0111\u00e1o: N\u1ebfu s\u1eed d\u1ee5ng c\u00e1c m\u00e3 captcha t\u01b0\u01a1ng t\u1ef1 th\u00ec hacker c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c robot v\u01b0\u1ee3t qua \u0111\u01b0\u1ee3c b\u00e0i test n\u00e0y. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c thay \u0111\u1ed5i captcha th\u01b0\u1eddng xuy\u00ean v\u00e0 tr\u00e1nh c\u00e1c ph\u00e9p to\u00e1n ph\u1ed5 bi\u1ebfn nh\u01b0 1+1 l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/span><\/li>\n
    • B\u1ea3o m\u1eadt t\u1eadp l\u1ec7nh: S\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng chuy\u1ec3n c\u00e1c \u0111\u00e1p \u00e1n c\u1ee7a CAPTCHA d\u01b0\u1edbi d\u1ea1ng v\u0103n b\u1ea3n thu\u1ea7n t\u00fay v\u00e0 tr\u00e1nh s\u1eed d\u1ee5ng c\u00e1c scripts CAPTCHA tr\u00ean m\u1ea1ng, v\u00ec nh\u1eefng scripts n\u00e0y d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng h\u01a1n.<\/span><\/li>\n
    • Ki\u1ec3m tra kh\u1ea3 n\u0103ng truy c\u1eadp:\u00a0 CAPTCHA c\u1ea7n c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c b\u1edfi m\u1ecdi ng\u01b0\u1eddi d\u00f9ng, d\u01b0\u1edbi nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau nh\u01b0 v\u0103n b\u1ea3n, h\u00ecnh \u1ea3nh, \u00e2m thanh.<\/span><\/li>\n<\/ul>\n

      Captcha s\u1ebd gi\u00fap cho b\u1ea1n tr\u00e1nh kh\u1ecfi \u0111\u01b0\u1ee3c spam mail, hack website hay nh\u1eefng nguy c\u01a1 r\u1ee7i ro trong qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd. Do \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng b\u1ed9 c\u00f4ng c\u1ee5 captcha \u0111\u1ec3 b\u1ea3o v\u1ec7 website c\u1ee7a m\u00ecnh an to\u00e0n nh\u00e9!<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

      Captcha xu\u1ea5t hi\u1ec7n kh\u00e1 nhi\u1ec1u tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng \u0111i\u1ec7n t\u1eed nh\u01b0 c\u00e1c di\u1ec5n \u0111\u00e0n, website\u2026 khi b\u1ea1n \u0111\u0103ng k\u00fd, \u0111\u0103ng nh\u1eadp hay th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ec7nh n\u00e0o \u0111\u00f3. Nh\u01b0ng t\u1ea1i sao b\u1ea1n ph\u1ea3i g\u00f5 ch\u00ednh x\u00e1c ch\u00fang? C\u00f9ng t\u00ecm hi\u1ec3u Captcha l\u00e0 g\u00ec trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y! Captcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n […]<\/p>\n","protected":false},"author":1,"featured_media":13609,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[58],"tags":[],"yoast_head":"\nCaptcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n g\u00f5 \u0111\u00fang l\u1ec7nh Captcha<\/title>\n<meta name=\"description\" content=\"Captcha xu\u1ea5t hi\u1ec7n nhi\u1ec1u tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng \u0111i\u1ec7n t\u1eed nh\u01b0 c\u00e1c di\u1ec5n \u0111\u00e0n, website\u2026 khi b\u1ea1n \u0111\u0103ng k\u00fd hay th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ec7nh n\u00e0o \u0111\u00f3. V\u1eady captcha l\u00e0 g\u00ec?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/adsplus.vn\/blog\/captcha-la-gi-tai-sao-ban-phai-thuc-hien-go-dung-lenh-captcha\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Captcha l\u00e0 g\u00ec? T\u1ea1i sao b\u1ea1n ph\u1ea3i th\u1ef1c hi\u1ec7n g\u00f5 \u0111\u00fang l\u1ec7nh Captcha\" \/>\n<meta property=\"og:description\" content=\"Captcha xu\u1ea5t hi\u1ec7n nhi\u1ec1u tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng \u0111i\u1ec7n t\u1eed nh\u01b0 c\u00e1c di\u1ec5n \u0111\u00e0n, website\u2026 khi b\u1ea1n \u0111\u0103ng k\u00fd hay th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ec7nh n\u00e0o \u0111\u00f3. 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