{"id":139704,"date":"2025-08-04T11:51:39","date_gmt":"2025-08-04T04:51:39","guid":{"rendered":"https:\/\/phongvu.vn\/cong-nghe\/?p=139704"},"modified":"2025-08-05T13:31:43","modified_gmt":"2025-08-05T06:31:43","slug":"wi-fi-cong-cong","status":"publish","type":"post","link":"https:\/\/phongvu.vn\/cong-nghe\/wi-fi-cong-cong\/","title":{"rendered":"Wi-Fi c\u00f4ng c\u1ed9ng: K\u1ebft n\u1ed1i ti\u1ec7n l\u1ee3i hay c\u00e1i b\u1eaby r\u00f2 r\u1ec9 d\u1eef li\u1ec7u?"},"content":{"rendered":"\n<p>B\u1ea1n \u0111ang ng\u1ed3i \u1edf qu\u00e1n c\u00e0 ph\u00ea, s\u00e2n bay hay trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i &#8211; n\u01a1i Wi-Fi c\u00f4ng c\u1ed9ng lu\u00f4n s\u1eb5n s\u00e0ng ch\u1ec9 v\u1edbi m\u1ed9t c\u00fa ch\u1ea1m. \u0110i\u1ec1u n\u00e0y khi\u1ebfn ch\u00fang ta d\u1ec5 d\u00e0ng truy c\u1eadp Internet m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i. Tuy nhi\u00ean, \u0111\u1eb1ng sau s\u1ef1 ti\u1ec7n l\u1ee3i \u1ea5y, li\u1ec7u ch\u00fang ta c\u00f3 \u0111ang \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n v\u1ec1 b\u1ea3o m\u1eadt d\u1eef li\u1ec7u c\u00e1 nh\u00e2n? H\u00e3y c\u00f9ng <a href=\"https:\/\/phongvu.vn\/cong-nghe\/\" target=\"_blank\" rel=\"noreferrer noopener\">Phong V\u0169 Tech News<\/a> t\u00ecm th\u1ea5y l\u1eddi gi\u1ea3i \u0111\u00e1p chi ti\u1ebft \u1edf b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y!<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_55 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6a1f22a92d3d7\" ><span class=\"\"><span style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6a1f22a92d3d7\"  type=\"checkbox\" id=\"item-6a1f22a92d3d7\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/phongvu.vn\/cong-nghe\/wi-fi-cong-cong\/#I_Wi-Fi_cong_cong_la_gi\" title=\"I. Wi-Fi c\u00f4ng c\u1ed9ng l\u00e0 g\u00ec?\">I. Wi-Fi c\u00f4ng c\u1ed9ng l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/phongvu.vn\/cong-nghe\/wi-fi-cong-cong\/#II_Nhung_rui_ro_an_sau_mang_Wi-Fi_mien_phi\" title=\"II. Nh\u1eefng r\u1ee7i ro \u1ea9n sau m\u1ea1ng Wi-Fi mi\u1ec5n ph\u00ed\">II. Nh\u1eefng r\u1ee7i ro \u1ea9n sau m\u1ea1ng Wi-Fi mi\u1ec5n ph\u00ed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/phongvu.vn\/cong-nghe\/wi-fi-cong-cong\/#III_Dau_hieu_canh_bao_Wi-Fi_khong_an_toan\" title=\"III. D\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o Wi-Fi kh\u00f4ng an to\u00e0n\">III. D\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o Wi-Fi kh\u00f4ng an to\u00e0n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/phongvu.vn\/cong-nghe\/wi-fi-cong-cong\/#IV_Tong_ket\" title=\"IV. T\u1ed5ng k\u1ebft\">IV. T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"I_Wi-Fi_cong_cong_la_gi\"><\/span><strong>I. Wi-Fi c\u00f4ng c\u1ed9ng l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Wi-Fi c\u00f4ng c\u1ed9ng (Public Wi-Fi) l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 m\u1ea1ng kh\u00f4ng d\u00e2y mi\u1ec5n ph\u00ed, th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p t\u1ea1i c\u00e1c khu v\u1ef1c c\u00f4ng c\u1ed9ng nh\u01b0 qu\u00e1n c\u00e0 ph\u00ea, s\u00e2n bay, trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i, th\u01b0 vi\u1ec7n ho\u1eb7c c\u00e1c khu v\u1ef1c c\u00f4ng c\u1ed9ng kh\u00e1c. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn ti\u1ec7n l\u1ee3i gi\u00fap ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb (<a href=\"https:\/\/phongvu.vn\/c\/dien-thoai\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111i\u1ec7n tho\u1ea1i<\/a>, <a href=\"https:\/\/phongvu.vn\/c\/may-tinh-bang\" target=\"_blank\" rel=\"noreferrer noopener\">m\u00e1y t\u00ednh b\u1ea3ng<\/a>, <a href=\"https:\/\/phongvu.vn\/c\/laptop\" target=\"_blank\" rel=\"noreferrer noopener\">laptop<\/a>) v\u1edbi internet m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng d\u1eef li\u1ec7u di \u0111\u1ed9ng, mang l\u1ea1i s\u1ef1 ti\u1ec7n l\u1ee3i v\u00e0 linh ho\u1ea1t cao trong vi\u1ec7c truy c\u1eadp th\u00f4ng tin, l\u00e0m vi\u1ec7c ho\u1eb7c gi\u1ea3i tr\u00ed khi di chuy\u1ec3n.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2.jpg\" alt=\"Wi-Fi c\u00f4ng c\u1ed9ng l\u00e0 m\u1ea1ng kh\u00f4ng d\u00e2y mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c cung c\u1ea5p t\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m c\u00f4ng c\u1ed9ng\" class=\"wp-image-139706\" width=\"1068\" height=\"667\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2.jpg 1440w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-2-1344x840.jpg 1344w\" sizes=\"(max-width: 1068px) 100vw, 1068px\" title=\"\"><figcaption class=\"wp-element-caption\">Wi-Fi c\u00f4ng c\u1ed9ng l\u00e0 m\u1ea1ng kh\u00f4ng d\u00e2y mi\u1ec5n ph\u00ed \u0111\u01b0\u1ee3c cung c\u1ea5p t\u1ea1i c\u00e1c \u0111\u1ecba \u0111i\u1ec3m c\u00f4ng c\u1ed9ng (Ngu\u1ed3n: Internet)<\/figcaption><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"II_Nhung_rui_ro_an_sau_mang_Wi-Fi_mien_phi\"><\/span><strong>II. Nh\u1eefng r\u1ee7i ro \u1ea9n sau m\u1ea1ng Wi-Fi mi\u1ec5n ph\u00ed<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>M\u1eb7c d\u00f9 mang l\u1ea1i s\u1ef1 ti\u1ec7n l\u1ee3i v\u01b0\u1ee3t tr\u1ed9i, nh\u01b0ng Wi-Fi mi\u1ec5n ph\u00ed c\u00f4ng c\u1ed9ng l\u1ea1i \u1ea9n ch\u1ee9a nhi\u1ec1u m\u1ed1i nguy h\u1ea1i ti\u1ec1m t\u00e0ng m\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng b\u1ecf qua. Theo \u00f4ng Thomas Becker, chuy\u00ean gia an ninh m\u1ea1ng t\u1ea1i CyberGuard (\u0110\u1ee9c), c\u00e1c m\u1ea1ng Wi-Fi n\u01a1i c\u00f4ng c\u1ed9ng th\u01b0\u1eddng thi\u1ebfu c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt nghi\u00eam ng\u1eb7t, bi\u1ebfn ch\u00fang th\u00e0nh &#8220;m\u1ed3i ngon&#8221; cho tin t\u1eb7c.<\/p>\n\n\n\n<p><em>&#8220;Khi ng\u01b0\u1eddi d\u00f9ng k\u1ebft n\u1ed1i v\u00e0o m\u1ea1ng Wi-Fi kh\u00f4ng an to\u00e0n, d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i qua \u0111\u00f3 c\u00f3 th\u1ec3 b\u1ecb theo d\u00f5i ho\u1eb7c \u0111\u00e1nh c\u1eafp d\u1ec5 d\u00e0ng. \u0110\u00e2y ch\u00ednh l\u00e0 c\u01a1 h\u1ed9i \u0111\u1ec3 k\u1ebb t\u1ea5n c\u00f4ng th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh vi \u0111\u00e1nh c\u1eafp th\u00f4ng tin t\u00e0i kho\u1ea3n, m\u1eadt kh\u1ea9u, th\u1eadm ch\u00ed l\u00e0 gi\u00e0nh quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n thi\u1ebft b\u1ecb&#8221;<\/em>, \u00f4ng Becker gi\u1ea3i th\u00edch.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3.jpg\" alt=\"S\u1eed d\u1ee5ng Wi-Fi c\u00f4ng c\u1ed9ng c\u00f3 th\u1ec3 ti\u1ec1m \u1ea9n nhi\u1ec1u r\u1ee7i ro v\u1ec1 an ninh, b\u1ea3o m\u1eadt th\u00f4ng tin\" class=\"wp-image-139707\" width=\"1068\" height=\"667\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3.jpg 1440w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-3-1344x840.jpg 1344w\" sizes=\"(max-width: 1068px) 100vw, 1068px\" title=\"\"><figcaption class=\"wp-element-caption\">S\u1eed d\u1ee5ng Wi-Fi c\u00f4ng c\u1ed9ng c\u00f3 th\u1ec3 ti\u1ec1m \u1ea9n nhi\u1ec1u r\u1ee7i ro v\u1ec1 an ninh, b\u1ea3o m\u1eadt th\u00f4ng tin (Ngu\u1ed3n: Internet)<\/figcaption><\/figure>\n\n\n\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c r\u1ee7i ro ch\u00ednh m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i khi s\u1eed d\u1ee5ng Public Wi-Fi:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>R\u1ee7i ro<\/strong><\/td><td><strong>Chi ti\u1ebft<\/strong><\/td><\/tr><tr><td><strong>\u0110i\u1ec3m truy c\u1eadp gi\u1ea3 m\u1ea1o<\/strong><\/td><td>Hacker c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c \u0111i\u1ec3m Wi-Fi gi\u1ea3 m\u1ea1o, v\u1edbi t\u00ean m\u1ea1ng gi\u1ed1ng nh\u01b0 Wi-Fi c\u00f4ng c\u1ed9ng h\u1ee3p l\u1ec7 (v\u00ed d\u1ee5 \u201cCoffee_FreeWiFi\u201d thay v\u00ec \u201cCoffee_WiFi\u201d) \u0111\u1ec3 \u0111\u00e1nh l\u1eeba ng\u01b0\u1eddi d\u00f9ng.<\/td><\/tr><tr><td><strong>L\u1eafng nghe d\u1eef li\u1ec7u (Eavesdropping)<\/strong><\/td><td>Khi k\u1ebft n\u1ed1i v\u00e0o Wi-Fi kh\u00f4ng an to\u00e0n, d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i c\u00f3 th\u1ec3 b\u1ecb hacker theo d\u00f5i v\u00e0 \u0111\u00e1nh c\u1eafp.<\/td><\/tr><tr><td><strong>T\u1ea5n c\u00f4ng \u201cMan-in-the-Middle\u201d<\/strong><\/td><td>Hacker c\u00f3 th\u1ec3 ch\u1eb7n v\u00e0 thay \u0111\u1ed5i th\u00f4ng tin gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 trang web ho\u1eb7c d\u1ecbch v\u1ee5 m\u00e0 h\u1ecd \u0111ang truy c\u1eadp.<\/td><\/tr><tr><td><strong>T\u1ea5n c\u00f4ng ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<\/strong><\/td><td>M\u1ea1ng Wi-Fi c\u00f4ng c\u1ed9ng c\u00f3 th\u1ec3 l\u00e0 ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 hacker l\u00e2y nhi\u1ec5m ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i v\u00e0o thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/td><\/tr><tr><td><strong>\u0110\u00e1nh c\u1eafp th\u00f4ng tin t\u00e0i kho\u1ea3n<\/strong><\/td><td>M\u1ea1ng Wi-Fi kh\u00f4ng an to\u00e0n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c th\u00f4ng tin t\u00e0i kho\u1ea3n, m\u1eadt kh\u1ea9u, v\u00e0 c\u00e1c d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m b\u1ecb \u0111\u00e1nh c\u1eafp.<\/td><\/tr><tr><td><strong>Chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n thi\u1ebft b\u1ecb<\/strong><\/td><td>Hacker c\u00f3 th\u1ec3 x\u00e2m nh\u1eadp v\u00e0o thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n v\u00e0 truy c\u1eadp v\u00e0o d\u1eef li\u1ec7u c\u00e1 nh\u00e2n.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"III_Dau_hieu_canh_bao_Wi-Fi_khong_an_toan\"><\/span><strong>III. D\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o Wi-Fi kh\u00f4ng an to\u00e0n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 t\u1ef1 b\u1ea3o v\u1ec7 th\u00f4ng tin c\u00e1 nh\u00e2n kh\u1ecfi c\u00e1c hi\u1ec3m h\u1ecda kh\u00f4n l\u01b0\u1eddng tr\u00ean kh\u00f4ng gian m\u1ea1ng, vi\u1ec7c nh\u1eadn bi\u1ebft nh\u1eefng d\u1ea5u hi\u1ec7u c\u1ee7a m\u1ed9t m\u1ea1ng Wi-Fi c\u00f4ng c\u1ed9ng kh\u00f4ng an to\u00e0n l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. Tin t\u1eb7c th\u01b0\u1eddng l\u1ee3i d\u1ee5ng s\u1ef1 thi\u1ebfu c\u1ea3nh gi\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec3 gi\u0103ng b\u1eaby. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng \u0111i\u1ec3m b\u1ea1n c\u1ea7n l\u01b0u \u00fd:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4.jpg\" alt=\"M\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u \u0111\u00e1ng ch\u00fa \u00fd gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n c\u00e1c m\u1ea1ng WiFi ti\u1ec1m \u1ea9n r\u1ee7i ro\" class=\"wp-image-139708\" width=\"1066\" height=\"666\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4.jpg 1440w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/08\/wi-fi-cong-cong-4-1344x840.jpg 1344w\" sizes=\"(max-width: 1066px) 100vw, 1066px\" title=\"\"><figcaption class=\"wp-element-caption\">M\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u \u0111\u00e1ng ch\u00fa \u00fd gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n c\u00e1c m\u1ea1ng WiFi ti\u1ec1m \u1ea9n r\u1ee7i ro (Ngu\u1ed3n: Internet)<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>D\u1ea5u hi\u1ec7u<\/strong><\/td><td><strong>Chi ti\u1ebft<\/strong><\/td><\/tr><tr><td><strong>Kh\u00f4ng y\u00eau c\u1ea7u m\u1eadt kh\u1ea9u ho\u1eb7c m\u1eadt kh\u1ea9u r\u1ea5t \u0111\u01a1n gi\u1ea3n<\/strong><\/td><td>M\u1ea1ng Wi-Fi kh\u00f4ng y\u00eau c\u1ea7u b\u1ea5t k\u1ef3 m\u1eadt kh\u1ea9u, th\u00f4ng tin x\u00e1c th\u1ef1c n\u00e0o ho\u1eb7c s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1eb7c \u0111\u1ecbnh, d\u1ec5 \u0111o\u00e1n (nh\u01b0 &#8220;12345678&#8221;) l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a m\u1ed9t m\u1ea1ng kh\u00f4ng an to\u00e0n.<\/td><\/tr><tr><td><strong>T\u00ean m\u1ea1ng (SSID) b\u1ea5t th\u01b0\u1eddng<\/strong><\/td><td>N\u1ebfu b\u1ea1n th\u1ea5y m\u1ed9t m\u1ea1ng c\u00f3 t\u00ean nh\u01b0 &#8220;Free Wi-Fi&#8221;, &#8220;Public Network&#8221;, hay &#8220;Guest Wi-Fi&#8221; m\u00e0 kh\u00f4ng c\u00f3 t\u00ean ri\u00eang c\u1ee7a \u0111\u1ecba \u0111i\u1ec3m h\u00e3y c\u1ea3nh gi\u00e1c.<\/td><\/tr><tr><td><strong>T\u1ed1c \u0111\u1ed9 k\u1ebft n\u1ed1i ch\u1eadm b\u1ea5t th\u01b0\u1eddng<\/strong><\/td><td>Wi-Fi c\u00f4ng c\u1ed9ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c k\u1ebft n\u1ed1i th\u01b0\u1eddng xuy\u00ean b\u1ecb ng\u1eaft qu\u00e3ng c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a m\u1ed9t m\u1ea1ng kh\u00f4ng b\u1ea3o m\u1eadt ho\u1eb7c b\u1ecb t\u1ea5n c\u00f4ng.<\/td><\/tr><tr><td><strong>Kh\u00f4ng th\u1ec3 truy c\u1eadp m\u1ed9t s\u1ed1 trang web nh\u1ea5t \u0111\u1ecbnh<\/strong><\/td><td>N\u1ebfu b\u1ea1n \u0111\u1ed9t nhi\u00ean kh\u00f4ng th\u1ec3 truy c\u1eadp v\u00e0o m\u1ed9t s\u1ed1 trang web nh\u1ea5t \u0111\u1ecbnh, c\u00f3 th\u1ec3 m\u1ea1ng Wi-Fi b\u1ea1n \u0111ang d\u00f9ng \u0111\u00e3 b\u1ecb tin t\u1eb7c can thi\u1ec7p \u0111\u1ec3 ch\u1eb7n truy c\u1eadp ho\u1eb7c chuy\u1ec3n h\u01b0\u1edbng b\u1ea1n \u0111\u1ebfn c\u00e1c trang web gi\u1ea3 m\u1ea1o.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"IV_Tong_ket\"><\/span><strong>IV. T\u1ed5ng k\u1ebft<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Hy v\u1ecdng v\u1edbi nh\u1eefng th\u00f4ng tin tr\u00ean, b\u1ea1n \u0111\u1ecdc \u0111\u00e3 c\u00f3 c\u00e1i nh\u00ecn r\u00f5 h\u01a1n v\u1ec1 nh\u1eefng r\u1ee7i ro ti\u1ec1m \u1ea9n khi s\u1eed d\u1ee5ng Wi-Fi c\u00f4ng c\u1ed9ng. \u0110\u1eebng \u0111\u1ec3 s\u1ef1 ti\u1ec7n l\u1ee3i nh\u1ea5t th\u1eddi bi\u1ebfn th\u00e0nh c\u00e1i b\u1eaby r\u00f2 r\u1ec9 d\u1eef li\u1ec7u. H\u00e3y lu\u00f4n c\u1ea3nh gi\u00e1c v\u00e0 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1eadn h\u01b0\u1edfng internet m\u1ed9t c\u00e1ch an to\u00e0n. \u0110\u1ec3 c\u1eadp nh\u1eadt th\u00eam nhi\u1ec1u ki\u1ebfn th\u1ee9c v\u00e0 tin t\u1ee9c c\u00f4ng ngh\u1ec7 h\u1eefu \u00edch kh\u00e1c, h\u00e3y ti\u1ebfp t\u1ee5c theo Phong V\u0169 Tech News nh\u00e9!<\/p>\n\n\n\n<p><strong>B\u00e0i vi\u1ebft li\u00ean quan:<\/strong><\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/phongvu.vn\/cong-nghe\/cach-doi-ten-wifi\/\" target=\"_blank\" rel=\"noreferrer noopener\">T\u1ed5ng h\u1ee3p c\u00e1c c\u00e1ch \u0111\u1ed5i t\u00ean Wifi tr\u00ean c\u00e1c thi\u1ebft b\u1ecb nhanh, d\u1ec5 nh\u1ea5t 2025<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/phongvu.vn\/cong-nghe\/cach-ket-noi-wifi-cho-may-tinh-ban-win-10\/\" target=\"_blank\" rel=\"noreferrer noopener\">C\u00e1ch k\u1ebft n\u1ed1i wifi cho m\u00e1y t\u00ednh b\u00e0n Win 10 \u0111\u01a1n gi\u1ea3n nh\u1ea5t<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/phongvu.vn\/cong-nghe\/cach-ket-noi-wifi-tren-may-tinh-windows\/\" target=\"_blank\" rel=\"noreferrer noopener\">C\u00e1ch k\u1ebft n\u1ed1i wifi tr\u00ean m\u00e1y t\u00ednh Windows c\u1ef1c k\u1ef3 \u0111\u01a1n gi\u1ea3n<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea1n \u0111ang ng\u1ed3i \u1edf qu\u00e1n c\u00e0 ph\u00ea, s\u00e2n bay hay trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i &#8211; n\u01a1i Wi-Fi c\u00f4ng c\u1ed9ng lu\u00f4n s\u1eb5n s\u00e0ng ch\u1ec9 v\u1edbi m\u1ed9t c\u00fa ch\u1ea1m. \u0110i\u1ec1u n\u00e0y khi\u1ebfn ch\u00fang ta d\u1ec5 d\u00e0ng truy c\u1eadp Internet m\u1ecdi l\u00fac, m\u1ecdi n\u01a1i. Tuy nhi\u00ean, \u0111\u1eb1ng sau s\u1ef1 ti\u1ec7n l\u1ee3i \u1ea5y, li\u1ec7u ch\u00fang ta c\u00f3 \u0111ang \u0111\u1ed1i [&hellip;]<\/p>\n","protected":false},"author":34,"featured_media":139705,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false},"categories":[24],"tags":[],"_links":{"self":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts\/139704"}],"collection":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/users\/34"}],"replies":[{"embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/comments?post=139704"}],"version-history":[{"count":1,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts\/139704\/revisions"}],"predecessor-version":[{"id":139709,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts\/139704\/revisions\/139709"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/media\/139705"}],"wp:attachment":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/media?parent=139704"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/categories?post=139704"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/tags?post=139704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}