{"id":10725,"date":"2024-06-05T09:47:46","date_gmt":"2024-06-05T02:47:46","guid":{"rendered":"https:\/\/cloud.z.com\/vn\/?p=10725"},"modified":"2024-05-20T10:07:52","modified_gmt":"2024-05-20T03:07:52","slug":"dns-hijacking","status":"publish","type":"post","link":"https:\/\/cloud.z.com\/vn\/en\/news\/dns-hijacking\/","title":{"rendered":"DNS hijacking l\u00e0 g\u00ec? V\u00e0i c\u00e1ch ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n DNS hijacking"},"content":{"rendered":"<p>DNS hijacking l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda nghi\u00eam tr\u1ecdng \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n, v\u00e0 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng h\u1eadu qu\u1ea3 h\u1ebft s\u1ee9c nghi\u00eam tr\u1ecdng. B\u1edfi lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y cho ph\u00e9p hacker chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t c\u00e1c thi\u1ebft l\u1eadp DNS v\u00e0 chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng sang c\u00e1c website l\u1eeba \u0111\u1ea3o, n\u00f3 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng kh\u00e1c nhau. Trong b\u00e0i vi\u1ebft n\u00e0y, h\u00e3y c\u00f9ng Z.com t\u00ecm hi\u1ec3u v\u1ec1 DNS hijacking.<\/p>\n<p><span style=\"font-weight: 400;\">Xem th\u00eam: <\/span><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns\/\"><span style=\"font-weight: 400;\">DNS l\u00e0 g\u00ec? T\u1eeb A-Z v\u1ec1 DNS Google, DNS Server, DNS VNPT<\/span><\/a><\/p>\n<div class=\"tg_wrap_cbsv tg_wrap_cbsv_blue\" style=\"margin: 20px 0px; border-radius: 4px; border: 2px solid #0066b2;\"><cite style=\"margin: 0px; background-color: #0066b2; color: #fff; border-top-left-radius: 2px; border-top-right-radius: 2px; font-size: 19px; padding: 12px 20px; font-weight: bold; display: block; font-style: normal;\">B\u1ea1n \u0111ang mu\u1ed1n x\u00e2y d\u1ef1ng m\u1ed9t trang web c\u1ee7a ri\u00eang m\u00ecnh<\/cite><\/p>\n<div class=\"textwidget\" style=\"padding: 20px; background: #70c2e280;\">\u0110\u0103ng k\u00fd ngay t\u00ean mi\u1ec1n th\u01b0\u01a1ng hi\u1ec7u t\u1ea1i Tenten.vn ch\u1ec9 v\u1edbi 2 c\u00fa click chu\u1ed9t: <strong>Ki\u1ec3m tra s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a t\u00ean mi\u1ec1n: Nh\u1eadp t\u00ean mi\u1ec1n v\u00e0 nh\u1ea5n \"ki\u1ec3m tra\".<\/strong> <span style=\"color: #ffff00;\"><a class=\"btn_combi_sv\" style=\"font-weight: bold; color: #ffff00; padding: 8px 26px 8px 26px; font-size: 20px; line-height: 30px; border-radius: 56px; text-shadow: none; background: #0066b2; display: table; margin: 0px auto;\" href=\"https:\/\/tenten.vn\/vi\/bang-gia-ten-mien?code=knjcpEfWoTSzUNMw&amp;idCampaign=3080\">B\u1ea2NG GI\u00c1 T\u00caN MI\u1ec0N M\u1edaI NH\u1ea4T<\/a><\/span><\/p>\n<ul>\n<li><a href=\"https:\/\/bit.ly\/3QYbaqa\">V\u00e0o nh\u00f3m Zalo nh\u1eadn \u01b0u \u0111\u00e3i t\u00ean mi\u1ec1n t\u1ea1i \u0111\u00e2y<\/a><\/li>\n<li>Hotline: (024) 71 089 999<\/li>\n<li>Email: info@tenten.vn<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h3>DNS hijacking l\u00e0 g\u00ec?<\/h3>\n<p>DNS hijacking, hay DNS redirection attack, l\u00e0 lo\u1ea1i t\u1ea5n c\u00f4ng trong \u0111\u00f3 c\u00e1c truy v\u1ea5n DNS t\u1eeb tr\u00ecnh duy\u1ec7t c\u1ee7a n\u1ea1n nh\u00e2n b\u1ecb ph\u00e2n gi\u1ea3i sai, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng \u201cl\u1ea1c\u201d sang m\u1ed9t website ch\u1ee9a m\u00e3 \u0111\u1ed9c thay v\u00ec website h\u1ecd mu\u1ed1n v\u00e0o.<\/p>\n<p>N\u1ebfu nh\u01b0 m\u1ed9t s\u1ed1 lo\u1ea1i t\u1ea5n c\u00f4ng DNS spoofing, nh\u01b0 DNS cache poisoning, t\u1eadp trung v\u00e0o thay \u0111\u1ed5i c\u00e1c b\u1ea3n ghi DNS, th\u00ec DNS hijacking t\u00ecm c\u00e1ch thay \u0111\u1ed5i ch\u00ednh c\u00e1c thi\u1ebft l\u1eadp DNS, th\u01b0\u1eddng b\u1eb1ng c\u00e1ch c\u00e0i \u0111\u1eb7t malware l\u00ean m\u00e1y t\u00ednh n\u1ea1n nh\u00e2n. Nh\u1edd \u0111\u00f3, hacker c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t router c\u1ee7a b\u1ea1n, ti\u1ebfp c\u1eadn t\u00edn hi\u1ec7u DNS, ho\u1eb7c \u0111\u01a1n gi\u1ea3n l\u00e0 hack qu\u00e1 tr\u00ecnh giao ti\u1ebfp DNS. DNS hijacking l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i t\u1ea5n c\u00f4ng nguy hi\u1ec3m nh\u1ea5t nh\u1eafm v\u00e0o DNS.<\/p>\n<p>DNS hijacking \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n l\u1eabn doanh nghi\u1ec7p. V\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u00e1 nh\u00e2n, n\u00f3 cho ph\u00e9p hacker ti\u1ebfn h\u00e0nh scam phising. V\u1edbi doanh nghi\u1ec7p, c\u1ee5 th\u1ec3 l\u00e0 website c\u1ee7a h\u1ecd, hacker c\u00f3 th\u1ec3 \u0111i\u1ec1u h\u01b0\u1edbng kh\u00e1ch gh\u00e9 th\u0103m website sang c\u00e1c trang l\u1eeba \u0111\u1ea3o cho ch\u00fang l\u1eadp n\u00ean. Khi \u0111\u01b0a \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn \u0111\u00f3, c\u00e1c website l\u1eeba \u0111\u1ea3o n\u00e0y s\u1ebd \u0111\u00e1nh c\u1eafp th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0 d\u1eef li\u1ec7u c\u00e1 nh\u00e2n nh\u1ea1y c\u1ea3m c\u1ee7a n\u1ea1n nh\u00e2n, bao g\u1ed3m th\u00f4ng tin nh\u00e2n vi\u00ean, th\u00f4ng tin n\u1ed9i b\u1ed9, d\u1eef li\u1ec7u t\u00e0i ch\u00ednh nh\u1ea1y c\u1ea3m\u2026<\/p>\n<p>Th\u1eadm ch\u00ed, hacker c\u00f3 th\u1ec3 thu th\u1eadp th\u00f4ng tin t\u1eeb email n\u1ed9i b\u1ed9 c\u1ee7a doanh nghi\u1ec7p!<\/p>\n<p>C\u00f3 th\u1ec3 n\u00f3i, DNS hijacking l\u00e0 m\u1ed1i \u0111e d\u1ecda nghi\u00eam tr\u1ecdng c\u1ea3 v\u1ec1 d\u1eef li\u1ec7u l\u1eabn quy\u1ec1n ri\u00eang t\u01b0.<\/p>\n<p>Kh\u00e1 b\u1ea5t ng\u1edd l\u00e0, nhi\u1ec1u ISP c\u00f3 ti\u1ebfng v\u00e0 ch\u00ednh ph\u1ee7 m\u1ed9t s\u1ed1 qu\u1ed1c gia c\u0169ng s\u1eed d\u1ee5ng DNS hijacking \u0111\u1ec3 ki\u1ec3m so\u00e1t truy v\u1ea5n DNS c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. C\u00e1c ISP l\u00e0m vi\u1ec7c n\u00e0y \u0111\u1ec3 thu th\u1eadp th\u1ed1ng k\u00ea v\u00e0 ch\u1ea1y qu\u1ea3ng c\u00e1o khi ng\u01b0\u1eddi d\u00f9ng gh\u00e9 th\u0103m c\u00e1c trang web l\u1ea1. H\u1ecd l\u00e0m \u0111i\u1ec1u \u0111\u00f3 b\u1eb1ng c\u00e1ch t\u00e1i \u0111i\u1ec1u h\u01b0\u1edbng b\u1ea1n \u0111\u1ebfn website c\u1ee7a h\u1ecd, n\u01a1i hi\u1ec3n th\u1ecb qu\u1ea3ng c\u00e1o, thay v\u00ec \u0111\u01b0a ra th\u00f4ng b\u00e1o l\u1ed7i. Trong khi \u0111\u00f3, ch\u00ednh ph\u1ee7 s\u1eed d\u1ee5ng DNS hijacking \u0111\u1ec3 ki\u1ec3m duy\u1ec7t v\u00e0 t\u00e1i \u0111i\u1ec1u h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng sang c\u00e1c website an to\u00e0n \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00ednh ph\u1ee7 c\u1ea5p ph\u00e9p.<\/p>\n<p><img class=\"wp-image-23742\" src=\"https:\/\/www.hostify.vn\/blog\/wp-content\/uploads\/2024\/05\/dns-hijacking-2.png\" alt=\"DNS hijacking 2\" \/><\/p>\n<h3>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a DNS hijacking<\/h3>\n<p>Khi b\u1ea1n g\u00f5 \u0111\u1ecba ch\u1ec9 website v\u00e0o tr\u00ecnh duy\u1ec7t, n\u00f3 s\u1ebd thu th\u1eadp th\u00f4ng tin website \u0111\u00f3 t\u1eeb cache tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n (n\u1ebfu b\u1ea1n t\u1eebng gh\u00e9 th\u0103m website \u0111\u00f3 tr\u01b0\u1edbc \u0111\u00e2y), ho\u1eb7c g\u1eedi truy v\u1ea5n DNS \u0111\u1ebfn name server (th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi m\u1ed9t ISP uy t\u00edn). Ho\u1ea1t \u0111\u1ed9ng giao ti\u1ebfp t\u1eeb khi tr\u00ecnh duy\u1ec7t g\u1eedi truy v\u1ea5n v\u00e0 name server g\u1eedi ph\u1ea3n h\u1ed3i r\u1ea5t d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng, b\u1edfi d\u1eef li\u1ec7u l\u00fac n\u00e0y kh\u00f4ng h\u1ec1 m\u00e3 h\u00f3a. \u0110\u00e2y l\u00e0 l\u00fac hacker can thi\u1ec7p truy v\u1ea5n v\u00e0 t\u00e1i \u0111i\u1ec1u h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u1ed9t trong nh\u1eefng website \u0111\u1ed9c h\u1ea1i c\u1ee7a ch\u00fang.<\/p>\n<p>C\u00f3 4 lo\u1ea1i DNS hijacking kh\u00e1c nhau l\u00e0: local, router, rogue, v\u00e0 man-in-the-middle.<\/p>\n<p>- Local hijacking (hay c\u00f2n g\u1ecdi l\u00e0 local DNS hijacking) l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng nh\u1eb1m chuy\u1ec3n h\u01b0\u1edbng truy v\u1ea5n DNS \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 \u0111\u1ed9c h\u1ea1i. \u0110\u00e2y l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c c\u1ee5 th\u1ec3 c\u1ee7a DNS hijacking nh\u01b0ng di\u1ec5n ra \u1edf c\u1ea5p \u0111\u1ed9 thi\u1ebft b\u1ecb c\u00e1 nh\u00e2n ho\u1eb7c m\u1ea1ng c\u1ee5c b\u1ed9 (local network), kh\u00f4ng ph\u1ea3i tr\u00ean ph\u1ea1m vi r\u1ed9ng l\u1edbn h\u01a1n nh\u01b0 c\u00e1c ISP ho\u1eb7c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 DNS c\u00f4ng c\u1ed9ng.<\/p>\n<p>- Router hijacking l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng m\u1ea1ng trong \u0111\u00f3 k\u1ebb t\u1ea5n c\u00f4ng chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t router c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. B\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t router, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t DNS, chuy\u1ec3n h\u01b0\u1edbng l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp internet, ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nh\u1eb1m m\u1ee5c \u0111\u00edch x\u1ea5u. Router hijacking th\u01b0\u1eddng nh\u1eb1m v\u00e0o c\u00e1c router gia \u0111\u00ecnh ho\u1eb7c c\u00e1c router t\u1ea1i c\u00e1c doanh nghi\u1ec7p nh\u1ecf, v\u00ec ch\u00fang th\u01b0\u1eddng c\u00f3 b\u1ea3o m\u1eadt k\u00e9m h\u01a1n so v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng l\u1edbn.<\/p>\n<p>- Rogue hijacking l\u00e0 lo\u1ea1i DNS hijacking ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u so v\u1edbi hai lo\u1ea1i tr\u00ean, b\u1edfi n\u00f3 kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1eeb thi\u1ebft b\u1ecb \u0111\u00edch. Thay v\u00e0o \u0111\u00f3, hacker chi\u1ebfm name server c\u00f3 s\u1eb5n c\u1ee7a ISP \u0111\u1ec3 thay \u0111\u1ed5i thi\u1ebft l\u1eadp theo \u00fd mu\u1ed1n. K\u1ebft qu\u1ea3 l\u00e0 n\u1ea1n nh\u00e2n v\u1eabn truy xu\u1ea5t \u0111\u01b0\u1ee3c \u0111\u00fang m\u00e1y ch\u1ee7 DNS, nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf m\u00e1y ch\u1ee7 n\u00e0y \u0111\u00e3 b\u1ecb hacker x\u00e2m nh\u1eadp v\u00e0 thay \u0111\u1ed5i c\u00e1c b\u1ea3n ghi DNS \u0111\u1ec3 t\u00e1i \u0111i\u1ec1u h\u01b0\u1edbng truy v\u1ea5n DNS c\u1ee7a ng\u01b0\u1eddi d\u00f9ng sang m\u1ed9t website \u0111\u1ed9c h\u1ea1i.<\/p>\n<p>- Man-in-the-middle l\u00e0 lo\u1ea1i t\u1ea5n c\u00f4ng t\u1eadp trung v\u00e0o can thi\u1ec7p qu\u00e1 tr\u00ecnh giao ti\u1ebfp gi\u1eefa b\u1ea1n v\u00e0 DNS. S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng, hacker l\u00e0m gi\u00e1n \u0111o\u1ea1n giao ti\u1ebfp gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7 v\u1ed1n kh\u00f4ng b\u1ecb m\u00e3 h\u00f3a. Ng\u01b0\u1eddi d\u00f9ng truy v\u1ea5n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t \u0111\u1ecba ch\u1ec9 IP \u0111\u00edch tr\u1ecf \u0111\u1ebfn website ch\u1ee9a m\u00e3 \u0111\u1ed9c.<\/p>\n<p><img class=\"wp-image-23743\" src=\"https:\/\/www.hostify.vn\/blog\/wp-content\/uploads\/2024\/05\/dns-hijacking-3.png\" alt=\"DNS hijacking 3\" \/><\/p>\n<h3>C\u00e1ch ph\u00e1t hi\u1ec7n DNS hijacking<\/h3>\n<p>Tin vui l\u00e0 c\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 ph\u00e1t hi\u1ec7n li\u1ec7u DNS c\u1ee7a b\u1ea1n \u0111\u00e3 b\u1ecb hack hay ch\u01b0a. \u0110\u1ea7u ti\u00ean, b\u1ea1n c\u1ea7n quan s\u00e1t xem nh\u1eefng website m\u00ecnh th\u01b0\u1eddng truy c\u1eadp c\u00f3 bi\u1ec3u hi\u1ec7n ch\u1eadm h\u01a1n th\u00f4ng th\u01b0\u1eddng hay kh\u00f4ng, ho\u1eb7c b\u1ea1n c\u00f3 ng\u1eabu nhi\u00ean nh\u1eadn \u0111\u01b0\u1ee3c qu\u1ea3ng c\u00e1o d\u1ea1ng popup (v\u1edbi n\u1ed9i dung r\u1eb1ng m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n b\u1ecb nhi\u1ec5m virus ch\u1eb3ng h\u1ea1n) - n\u1ebfu c\u00f3, DNS c\u1ee7a b\u1ea1n nhi\u1ec1u kh\u1ea3 n\u0103ng \u0111\u00e3 b\u1ecb hack. Tuy nhi\u00ean, v\u1edbi nh\u1eefng tri\u1ec7u ch\u1ee9ng tr\u00ean, ch\u01b0a th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh ch\u1eafc ch\u1eafn \u0111i\u1ec1u g\u00ec. Do \u0111\u00f3, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i c\u00e1ch test hi\u1ec7u qu\u1ea3 m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n:<\/p>\n<h4>Ch\u1ea1y c\u00e2u l\u1ec7nh \u201cping\u201d<\/h4>\n<p>C\u00e2u l\u1ec7nh \u201cping\u201d ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m tra m\u1ed9t \u0111\u1ecba ch\u1ec9 IP c\u00f3 th\u1ef1c s\u1ef1 t\u1ed3n t\u1ea1i hay kh\u00f4ng. N\u1ebfu tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n \u201cping\u201d \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng t\u1ed3n t\u1ea1i m\u00e0 v\u1eabn ph\u00e2n gi\u1ea3i \u0111\u01b0\u1ee3c, th\u00ec kh\u1ea3 n\u0103ng cao DNS c\u1ee7a b\u1ea1n \u0111\u00e3 b\u1ecb hack.<\/p>\n<p>Tr\u00ean macOS, b\u1ea1n m\u1edf \u1ee9ng d\u1ee5ng \u201cTerminal\u201d v\u00e0 g\u00f5 c\u00e2u l\u1ec7nh sau: ping kaspersky123456.com<\/p>\n<p>N\u1ebfu k\u1ebft qu\u1ea3 tr\u1ea3 v\u1ec1 l\u00e0 \u201ccannot resolve\u201d th\u00ec DNS v\u1eabn \u1ed5n.<\/p>\n<p>Tr\u00ean Windows, m\u1edf \u201cCommand Prompt\u201d v\u00e0 g\u00f5: ping kaspersky123456.com<\/p>\n<p>N\u1ebfu k\u1ec3 qu\u1ea3 tr\u1ea3 v\u1ec1 l\u00e0 \u201ccannot resolve\u201d, b\u1ea1n kh\u00f4ng c\u00f3 g\u00ec ph\u1ea3i lo l\u1eafng.<\/p>\n<h4>Ki\u1ec3m tra router ho\u1eb7c s\u1eed d\u1ee5ng m\u1ed9t \u1ee9ng d\u1ee5ng ki\u1ec3m tra router<\/h4>\n<p>B\u01b0\u1edbc ti\u1ebfp theo l\u00e0 s\u1eed d\u1ee5ng c\u00e1c website tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ki\u1ec3m tra router. C\u00e1c d\u1ecbch v\u1ee5 n\u00e0y ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ki\u1ec3m tra h\u1ec7 th\u1ed1ng v\u1edbi m\u1ed9t DNS resolver \u0111\u00e1ng tin c\u1eady, v\u00e0 xem li\u1ec7u b\u1ea1n c\u00f3 \u0111ang s\u1eed d\u1ee5ng m\u1ed9t m\u00e1y ch\u1ee7 DNS \u0111\u00e3 \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n hay ch\u01b0a. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 v\u00e0o trang admin c\u1ee7a router \u0111\u1ec3 ki\u1ec3m tra c\u00e1c thi\u1ebft l\u1eadp t\u1ea1i \u0111\u00f3.<\/p>\n<h4>S\u1eed d\u1ee5ng WhoIsMyDNS.com<\/h4>\n<p>D\u1ecbch v\u1ee5 n\u00e0y cho bi\u1ebft c\u00e1c m\u00e1y ch\u1ee7 DNS m\u00e0 b\u1ea1n \u0111ang s\u1eed d\u1ee5ng v\u00e0 c\u00f4ng ty s\u1edf h\u1eefu ch\u00fang. Tr\u00ecnh duy\u1ec7t c\u1ee7a b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 IP c\u1ee7a c\u00e1c m\u00e1y ch\u1ee7 DNS do ISP c\u1ee7a b\u1ea1n cung c\u1ea5p. N\u1ebfu t\u00ean c\u00f4ng ty c\u00f3 v\u1ebb l\u1ea1, th\u00ec b\u1ea1n \u0111\u00e3 b\u1ecb DNS hijacking.<\/p>\n<p>N\u1ebfu bi\u1ebft m\u00e1y ch\u1ee7 DNS c\u1ee7a b\u1ea1n \u0111\u00e3 b\u1ecb hack, ho\u1eb7c t\u1eebng di\u1ec5n ra tr\u01b0\u1edbc \u0111\u00e2y, th\u00ec l\u1eddi khuy\u00ean l\u00e0 s\u1eed d\u1ee5ng m\u1ed9t d\u1ecbch v\u1ee5 DNS c\u00f4ng c\u1ed9ng, nh\u01b0 Google DNS.<\/p>\n<p><img class=\"wp-image-23744\" src=\"https:\/\/www.hostify.vn\/blog\/wp-content\/uploads\/2024\/05\/dns-hijacking-4.png\" alt=\"DNS hijacking 4\" \/><\/p>\n<h3>C\u00e1ch ng\u0103n ch\u1eb7n DNS hijacking<\/h3>\n<p>D\u00f9 l\u00e0 local, router, hay rogue DNS hijacking, t\u1ed1t nh\u1ea5t h\u00e3y ph\u00f2ng tr\u00e1nh b\u1ecb hack DNS ngay t\u1eeb \u0111\u1ea7u. B\u1ea1n c\u1ea7n \u00e1p d\u1ee5ng nh\u1eefng bi\u1ec7n ph\u00e1p sau:<\/p>\n<h4>Kh\u00f4ng bao gi\u1edd b\u1ea5m v\u00e0o c\u00e1c link l\u1ea1<\/h4>\n<p>Bao g\u1ed3m link trong email, tin nh\u1eafn, hay m\u1ea1ng x\u00e3 h\u1ed9i. N\u00ean nh\u1edb, nh\u1eefng c\u00f4ng c\u1ee5 r\u00fat g\u1ecdn URL th\u01b0\u1eddng xuy\u00ean b\u1ecb l\u1ee3i d\u1ee5ng \u0111\u1ec3 \u1ea9n nh\u1eefng th\u00e0nh ph\u1ea7n nguy hi\u1ec3m trong c\u00e1c link, n\u00ean h\u00e3y c\u1ea3nh gi\u00e1c tr\u01b0\u1edbc c\u00e1c link r\u00fat g\u1ecdn nh\u01b0 v\u1eady. Ngo\u00e0i ra, d\u00f9 m\u1ea5t th\u1eddi gian, b\u1ea1n v\u1eabn n\u00ean t\u1ef1 nh\u1eadp URL v\u00e0o tr\u00ecnh duy\u1ec7t thay v\u00ec b\u1ea5m v\u00e0o c\u00e1c link nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n<h4>S\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m antivirus uy t\u00edn<\/h4>\n<p>\u0110\u1ecbnh k\u1ef3 qu\u00e9t m\u00e1y t\u00ednh \u0111\u1ec3 t\u00ecm malware v\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m khi \u0111\u01b0\u1ee3c nh\u1eafc. Ph\u1ea7n m\u1ec1m b\u1ea3o m\u1eadt h\u1ec7 th\u1ed1ng s\u1ebd gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c v\u1ea5n \u0111\u1ec1 m\u00e0 DNS hijacking g\u00e2y ra, \u0111\u1eb7c bi\u1ec7t n\u1ebfu b\u1ea1n b\u1ecb nhi\u1ec5m trojan trong m\u1ed9t v\u1ee5 local DNS hijacking.<\/p>\n<h4>S\u1eed d\u1ee5ng VPN<\/h4>\n<p>VPN t\u1ea1o m\u1ed9t tunnel m\u00e3 h\u00f3a \u0111\u1ec3 \u0111i\u1ec1u ph\u1ed1i truy v\u1ea5n v\u00e0 l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp website c\u1ee7a b\u1ea1n. H\u1ea7u h\u1ebft c\u00e1c VPN n\u1ed5i ti\u1ebfng \u0111\u1ec1u s\u1eed d\u1ee5ng m\u00e1y ch\u1ee7 DNS ri\u00eang, v\u1edbi m\u00e3 h\u00f3a hai \u0111\u1ea7u \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n v\u00e0 m\u00e1y ch\u1ee7 DNS c\u1ee7a h\u1ecd.<\/p>\n<h4>Thay \u0111\u1ed5i m\u1eadt m\u00e3 v\u00e0 username c\u1ee7a router<\/h4>\n<p>Nghe c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng qu\u00ean m\u1ea5t \u0111i\u1ec1u n\u00e0y. Th\u00f4ng tin \u0111\u0103ng nh\u1eadp m\u1eb7c \u0111\u1ecbnh c\u1ee7a router r\u1ea5t d\u1ec5 t\u00ecm ra, do \u0111\u00f3 c\u00f3 th\u1ec3 b\u1ecb thay \u0111\u1ed5i d\u1ec5 d\u00e0ng. Ngo\u00e0i ra, khi t\u1ea1o m\u1eadt m\u00e3 m\u1edbi, h\u00e3y k\u1ebft h\u1ee3p s\u1ed1, k\u00fd t\u1ef1, k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t, v\u00e0 vi\u1ebft th\u01b0\u1eddng, vi\u1ebft hoa\u2026<\/p>\n<p>Ch\u00fac c\u00e1c b\u1ea1n th\u00e0nh c\u00f4ng!<\/p>\n<div class=\"tg_wrap_cbsv tg_wrap_cbsv_blue\" style=\"margin: 20px 0px; border-radius: 4px; border: 2px solid #0066b2;\"><cite style=\"margin: 0px; background-color: #0066b2; color: #fff; border-top-left-radius: 2px; border-top-right-radius: 2px; font-size: 19px; padding: 12px 20px; font-weight: bold; display: block; font-style: normal;\">B\u1ea1n \u0111ang mu\u1ed1n x\u00e2y d\u1ef1ng m\u1ed9t trang web c\u1ee7a ri\u00eang m\u00ecnh<\/cite><\/p>\n<div class=\"textwidget\" style=\"padding: 20px; background: #70c2e280;\">\u0110\u0103ng k\u00fd ngay t\u00ean mi\u1ec1n th\u01b0\u01a1ng hi\u1ec7u t\u1ea1i Tenten.vn ch\u1ec9 v\u1edbi 2 c\u00fa click chu\u1ed9t: <strong>Ki\u1ec3m tra s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a t\u00ean mi\u1ec1n: Nh\u1eadp t\u00ean mi\u1ec1n v\u00e0 nh\u1ea5n \"ki\u1ec3m tra\".<\/strong> <span style=\"color: #ffff00;\"><a class=\"btn_combi_sv\" style=\"font-weight: bold; color: #ffff00; padding: 8px 26px 8px 26px; font-size: 20px; line-height: 30px; border-radius: 56px; text-shadow: none; background: #0066b2; display: table; margin: 0px auto;\" href=\"https:\/\/tenten.vn\/vi\/bang-gia-ten-mien?code=knjcpEfWoTSzUNMw&amp;idCampaign=3080\">B\u1ea2NG GI\u00c1 T\u00caN MI\u1ec0N M\u1edaI NH\u1ea4T<\/a><\/span><\/p>\n<ul>\n<li><a href=\"https:\/\/bit.ly\/3QYbaqa\">V\u00e0o nh\u00f3m Zalo nh\u1eadn \u01b0u \u0111\u00e3i t\u00ean mi\u1ec1n t\u1ea1i \u0111\u00e2y<\/a><\/li>\n<li>Hotline: (024) 71 089 999<\/li>\n<li>Email: info@tenten.vn<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h4><strong>B\u00e0i li\u00ean quan<\/strong><\/h4>\n<ul>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns\/\">DNS l\u00e0 g\u00ec? T\u1eeb A-Z v\u1ec1 DNS Google, DNS Server, DNS VNPT<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns-1-1-1-1\/\">T\u1eeb A-Z v\u1ec1 DNS 1.1.1.1, h\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t DNS 1.1.1.1 tr\u00ean m\u00e1y t\u00ednh v\u00e0 \u0111i\u1ec7n tho\u1ea1i<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/ddns\/\">DDNS l\u00e0 g\u00ec? C\u00e1c l\u1ee3i \u00edch m\u00e0 DDNS mang l\u1ea1i b\u1ea1n kh\u00f4ng n\u00ean b\u1ecf l\u1ee1<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/flush-dns\/\">Flush DNS l\u00e0 g\u00ec? C\u00e1ch x\u00f3a cache DNS trong Windows chi ti\u1ebft nh\u1ea5t<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns-security\/\">DNS Security l\u00e0 g\u00ec? N\u00ean ch\u1ecdn DNS Security n\u00e0o t\u1ed1t nh\u1ea5t?<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns-domain-check\/\">DNS Domain Check v\u00e0 nh\u1eefng l\u01b0u \u00fd quan tr\u1ecdng \u00edt ng\u01b0\u1eddi bi\u1ebft<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns_probe_finished_nxdomain\/\">L\u1ed7i DNS_PROBE_FINISHED_NXDOMAIN l\u00e0 g\u00ec? M\u1ed9t s\u1ed1 c\u00e1ch kh\u1eafc ph\u1ee5c nhanh, hi\u1ec7u qu\u1ea3 cao<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/dns_probe_started\/\">Nguy\u00ean nh\u00e2n l\u1ed7i DNS_PROBE_STARTED v\u00e0 6 c\u00e1ch kh\u1eafc ph\u1ee5c nhanh ch\u00f3ng<\/a><\/li>\n<li class=\"title-article\"><a href=\"https:\/\/cloud.z.com\/vn\/news\/adguard-dns\/\">AdGuard DNS l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t AdGuard DNS tr\u00ean Windows, iOS, Android, Ubuntu<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/domain\/\">Domain l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n t\u1eeb A-Z<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-la-gi\/\">T\u00ean mi\u1ec1n l\u00e0 g\u00ec? Nh\u1eefng l\u01b0u \u00fd khi s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 t\u00ean mi\u1ec1n<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-vn\/\">T\u00ean mi\u1ec1n vn: L\u1ee3i \u00edch &amp; \u01afu \u0111i\u1ec3m c\u1ee7a t\u00ean mi\u1ec1n Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-vn-2\/\">T\u00ean mi\u1ec1n .vn l\u00e0 g\u00ec? N\u00ean mua t\u00ean mi\u1ec1n .vn \u1edf \u0111\u00e2u r\u1ebb nh\u1ea5t?<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-com-vn\/\">T\u00ean mi\u1ec1n .com.vn l\u00e0 g\u00ec? N\u00ean ch\u1ecdn t\u00ean mi\u1ec1n .com.vn hay .vn?<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-edu-vn\/\">T\u00ean mi\u1ec1n Edu.vn l\u00e0 c\u00e1nh c\u1ed5ng truy\u1ec1n t\u1ea3i tri th\u1ee9c tr\u1ef1c tuy\u1ebfn<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-biz-vn-2\/\">\u00dd ngh\u0129a t\u00ean mi\u1ec1n biz vn v\u00e0 l\u1ee3i th\u1ebf khi d\u00f9ng .biz.vn cho doanh nghi\u1ec7p<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-name-vn\/\">T\u1eeb A-Z v\u1ec1 t\u00ean mi\u1ec1n name.vn, \u0111\u0103ng k\u00fd name.vn \u1edf \u0111\u00e2u r\u1ebb v\u00e0 uy t\u00edn?<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-ai-vn\/\">T\u00ean mi\u1ec1n ai.vn l\u00e0 g\u00ec? Mang l\u1ea1i l\u1ee3i \u00edch g\u00ec khi s\u1eed d\u1ee5ng?<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-id-vn\/\">T\u00ean mi\u1ec1n id.vn l\u00e0 g\u00ec? L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n id.vn<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-io-vn\/\">T\u00ean mi\u1ec1n io.vn l\u00e0 g\u00ec? Mang l\u1ea1i l\u1ee3i \u00edch g\u00ec khi s\u1eed d\u1ee5ng?<\/a><\/li>\n<li><a href=\"https:\/\/cloud.z.com\/vn\/news\/ten-mien-net\/\">T\u00ean mi\u1ec1n .net l\u00e0 g\u00ec? L\u1ee3i \u00edch khi s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n .net gi\u00e1 r\u1ebb<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>DNS hijacking l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda nghi\u00eam tr\u1ecdng \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n, v\u00e0 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng h\u1eadu qu\u1ea3 h\u1ebft s\u1ee9c nghi\u00eam tr\u1ecdng. B\u1edfi lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y cho ph\u00e9p hacker chi\u1ebfm quy\u1ec1n ki\u1ec3m so\u00e1t c\u00e1c...<\/p>\n","protected":false},"author":28,"featured_media":10726,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[177,83],"tags":[],"jetpack_featured_media_url":"https:\/\/cloud.z.com\/vn\/wp-content\/uploads\/2024\/05\/dns-hijacking-1.png","_links":{"self":[{"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/posts\/10725"}],"collection":[{"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/users\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/comments?post=10725"}],"version-history":[{"count":1,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/posts\/10725\/revisions"}],"predecessor-version":[{"id":10727,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/posts\/10725\/revisions\/10727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/media\/10726"}],"wp:attachment":[{"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/media?parent=10725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/categories?post=10725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cloud.z.com\/vn\/en\/wp-json\/wp\/v2\/tags?post=10725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}