{"id":22901,"date":"2023-09-07T10:12:53","date_gmt":"2023-09-07T03:12:53","guid":{"rendered":"https:\/\/www.fiahub.com\/blog\/?p=22901"},"modified":"2023-09-09T14:22:47","modified_gmt":"2023-09-09T07:22:47","slug":"sandwich-attacks-trong-defi-la-gi","status":"publish","type":"post","link":"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/","title":{"rendered":"Sandwich Attacks trong DeFi l\u00e0 g\u00ec?"},"content":{"rendered":"<p><span style=\"font-weight: 400\">Sandwich Attacks l\u00e0 m\u1ed9t d\u1ea1ng ho\u1ea1t \u0111\u1ed9ng giao d\u1ecbch \u0111\u1ed9c h\u1ea1i tr\u00ean c\u00e1c s\u00e0n giao d\u1ecbch t\u00e0i ch\u00ednh nh\u1eb1m t\u00ecm c\u00e1ch ki\u1ebfm l\u1ee3i t\u1eeb giao d\u1ecbch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng chi ph\u00ed c\u1ee7a ch\u00ednh h\u1ecd.<\/span><\/p>\n<p><span style=\"font-weight: 400\">B\u1eaft \u0111\u1ea7u tr\u00ean th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n, c\u00e1c cu\u1ed9c Sandwich Attacks \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn trong giao d\u1ecbch ti\u1ec1n \u0111i\u1ec7n t\u1eed trong k\u1ef7 nguy\u00ean t\u00e0i ch\u00ednh phi t\u1eadp trung (DeFi) v\u00e0 <a href=\"https:\/\/www.fiahub.com\/blog\/tag\/dex\/\">s\u00e0n giao d\u1ecbch phi t\u1eadp trung (DEXes)<\/a>.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<\/div><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:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Cac_cuoc_tan_cong_DeFi_Sandwich_DEX_va_truot_gia\" >C\u00e1c cu\u1ed9c\u00a0 t\u1ea5n c\u00f4ng DeFi Sandwich: DEX v\u00e0 tr\u01b0\u1ee3t gi\u00e1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Sandwich_Attacks_trong_DeFi\" >Sandwich Attacks trong DeFi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Dieu_gi_xay_ra_trong_cuoc_tan_cong_Sandwich_Attacks\" >\u0110i\u1ec1u g\u00ec x\u1ea3y ra trong cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Cac_cuoc_tan_cong_Sandwich_Attacks_co_the_xay_ra_nhu_the_nao\" >C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks c\u00f3 th\u1ec3 x\u1ea3y ra nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Cach_tranh_cac_cuoc_tan_cong_Sandwich_Attacks_trong_DeFi\" >C\u00e1ch tr\u00e1nh c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks trong DeFi<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Cau_hoi_thuong_gap\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Cuoc_tan_cong_Sandwich_trong_DeFi_la_gi\" >Cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich trong DeFi l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Cac_cuoc_tan_cong_Sandwich_co_mang_lai_loi_nhuan_khong\" >C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich c\u00f3 mang l\u1ea1i l\u1ee3i nhu\u1eadn kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Tai_sao_cac_cuoc_tan_cong_Sandwich_xay_ra\" >T\u1ea1i sao c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich x\u1ea3y ra?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#Co_the_tranh_duoc_cac_cuoc_tan_cong_Sandwich\" >C\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Cac_cuoc_tan_cong_DeFi_Sandwich_DEX_va_truot_gia\"><\/span><span style=\"font-weight: 400\">C\u00e1c cu\u1ed9c\u00a0 t\u1ea5n c\u00f4ng DeFi Sandwich: DEX v\u00e0 tr\u01b0\u1ee3t gi\u00e1<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">C\u00e1c cu\u1ed9c Sandwich Attacks t\u1eadn d\u1ee5ng c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ed9c \u0111\u00e1o c\u1ee7a DeFi, \u0111\u1eb7c bi\u1ec7t l\u00e0 giao d\u1ecbch DEX, \u0111\u1ec3 ki\u1ebfm ti\u1ec1n b\u1eb1ng c\u00e1ch thao t\u00fang th\u1ecb tr\u01b0\u1eddng ti\u1ec1n \u0111i\u1ec7n t\u1eed. \u0110\u1ec3 hi\u1ec3u c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng, tr\u01b0\u1edbc ti\u00ean c\u1ea7n ph\u1ea3i hi\u1ec3u c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a DEX.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">C\u00e1c DEX ph\u1ed5 bi\u1ebfn nh\u1ea5t s\u1eed d\u1ee5ng c\u00e1c nh\u00e0 t\u1ea1o l\u1eadp th\u1ecb tr\u01b0\u1eddng t\u1ef1 \u0111\u1ed9ng (AMM &#8211; <\/span><b>automated market makers<\/b><span style=\"font-weight: 400\">) th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t s\u00e0n giao d\u1ecbch m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ea7u v\u00e0o trung gian ho\u1eb7c th\u1ee7 c\u00f4ng. AMM th\u01b0\u1eddng ch\u1ea1y theo m\u1ed9t c\u00f4ng th\u1ee9c gi\u1eef t\u1ed5ng thanh kho\u1ea3n c\u1ee7a ch\u00fang &#8211; v\u1ec1 c\u01a1 b\u1ea3n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ed9t s\u1ed5 \u0111\u1eb7t h\u00e0ng &#8211; kh\u00f4ng \u0111\u1ed5i.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Nh\u1eefng AMM \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <\/span><b>&#8216;s\u1ea3n ph\u1ea9m kh\u00f4ng \u0111\u1ed5i&#8217; <\/b><span style=\"font-weight: 400\">n\u00e0y quy \u0111\u1ecbnh m\u1ee9c gi\u00e1 m\u00e0 ng\u01b0\u1eddi d\u00f9ng DEX c\u00f3 th\u1ec3 trao \u0111\u1ed5i m\u00e3 th\u00f4ng b\u00e1o ti\u1ec1n \u0111i\u1ec7n t\u1eed d\u1ef1a tr\u00ean t\u00ednh thanh kho\u1ea3n v\u00e0 quy m\u00f4 \u0111\u01a1n \u0111\u1eb7t h\u00e0ng.<\/span><\/p>\n<p><span style=\"font-weight: 400\">C\u00f4ng th\u1ee9c n\u00e0y c\u0169ng c\u00f3 ngh\u0129a l\u00e0 vi\u1ec7c th\u1ef1c hi\u1ec7n \u0111\u01a1n h\u00e0ng tu\u00e2n theo m\u1ed9t \u0111\u01b0\u1eddng cong gi\u00e1 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t h\u01b0\u1edbng d\u1eabn v\u1ec1 t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i cu\u1ed1i c\u00f9ng m\u00e0 giao d\u1ecbch s\u1ebd th\u1ef1c hi\u1ec7n. V\u00ec b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng DEX m\u00e0 kh\u00f4ng b\u1ecb h\u1ea1n ch\u1ebf n\u00ean gi\u00e1 th\u1ef1c hi\u1ec7n kh\u00f4ng ph\u1ea3i l\u00e0 khoa h\u1ecdc ch\u00ednh x\u00e1c v\u00ec \u0111i\u1ec1u ki\u1ec7n thanh kho\u1ea3n li\u00ean t\u1ee5c thay \u0111\u1ed5i.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Th\u00eam v\u00e0o \u0111\u00f3 l\u00e0 s\u1ef1 ch\u1eadm tr\u1ec5 m\u00e0 ng\u01b0\u1eddi d\u00f9ng g\u1eb7p ph\u1ea3i gi\u1eefa vi\u1ec7c quy\u1ebft \u0111\u1ecbnh giao d\u1ecbch v\u00e0 g\u1eedi m\u00e3 th\u00f4ng b\u00e1o \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m giao d\u1ecbch th\u1ef1c hi\u1ec7n v\u00e0 r\u00f5 r\u00e0ng l\u00e0 t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i th\u1ef1c hi\u1ec7n c\u00f3 th\u1ec3 kh\u00e1c v\u1edbi t\u1ef7 gi\u00e1 m\u00e0 ng\u01b0\u1eddi d\u00f9ng mong \u0111\u1ee3i ban \u0111\u1ea7u.<\/span><\/p>\n<p><span style=\"font-weight: 400\">T\u00ecnh tr\u1ea1ng kh\u00f3 kh\u0103n tr\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u2018tr\u01b0\u1ee3t gi\u00e1\u2019 trong DeFi v\u00e0 c\u00e1c nh\u00e0 giao d\u1ecbch DEX ph\u1ea3i n\u1eafm ch\u1eafc c\u00e1c \u0111i\u1ec1u ki\u1ec7n thanh kho\u1ea3n, c\u0169ng nh\u01b0 \u0111\u1ed3ng \u00fd m\u1ee9c \u0111\u1ed9 tr\u01b0\u1ee3t gi\u00e1 m\u00e0 h\u1ecd s\u1eb5n s\u00e0ng ch\u1ea5p nh\u1eadn \u0111\u1ec3 giao d\u1ecbch hi\u1ec7u qu\u1ea3.<\/span><\/p>\n<figure id=\"attachment_22903\" aria-describedby=\"caption-attachment-22903\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-22903\" src=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2.png\" alt=\"Sandwich Attacks\" width=\"900\" height=\"403\" srcset=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2.png 1600w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-300x134.png 300w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-1024x458.png 1024w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-150x67.png 150w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-768x344.png 768w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-1536x687.png 1536w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-450x201.png 450w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a2-1200x537.png 1200w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-22903\" class=\"wp-caption-text\">Th\u00f4ng tin tr\u00ean l\u00e0 n\u1ec1n t\u1ea3ng c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u c\u00e1ch c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks th\u01b0\u1eddng x\u1ea3y ra tr\u00ean c\u00e1c DEX ph\u1ed5 bi\u1ebfn nh\u01b0 PancakeSwap, SushiSwap v\u00e0 Uniswap.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Sandwich_Attacks_trong_DeFi\"><\/span><span style=\"font-weight: 400\">Sandwich Attacks trong DeFi<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">Th\u00f4ng tin tr\u00ean l\u00e0 n\u1ec1n t\u1ea3ng c\u1ea7n thi\u1ebft \u0111\u1ec3 hi\u1ec3u c\u00e1ch c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks th\u01b0\u1eddng x\u1ea3y ra tr\u00ean c\u00e1c DEX ph\u1ed5 bi\u1ebfn nh\u01b0 <a href=\"https:\/\/www.fiahub.com\/blog\/huong-dan-ve-pancakeswap\/\">PancakeSwap<\/a>, SushiSwap v\u00e0 Uniswap.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng l\u1ee3i d\u1ee5ng s\u1ef1 tr\u01b0\u1ee3t gi\u00e1 v\u00e0 s\u1ef1 thi\u1ebfu kinh nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec3 thao t\u00fang t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i cu\u1ed1i c\u00f9ng m\u00e0 ng\u01b0\u1eddi d\u00f9ng giao d\u1ecbch sau \u0111\u00f3.<\/span><\/p>\n<p><span style=\"font-weight: 400\">K\u1ebft qu\u1ea3 l\u00e0 k\u1ebb t\u1ea5n c\u00f4ng ki\u1ebfm \u0111\u01b0\u1ee3c l\u1ee3i nhu\u1eadn th\u00f4ng qua quy tr\u00ecnh hai b\u01b0\u1edbc, trong khi ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c n\u1ea1n nh\u00e2n nh\u1eadn \u0111\u01b0\u1ee3c \u00edt m\u00e3 th\u00f4ng b\u00e1o h\u01a1n m\u1ee9c h\u1ecd hy v\u1ecdng nh\u1eadn \u0111\u01b0\u1ee3c ban \u0111\u1ea7u v\u00e0 v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 b\u1ecb l\u1eeba \u0111\u1ea3o.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dieu_gi_xay_ra_trong_cuoc_tan_cong_Sandwich_Attacks\"><\/span><span style=\"font-weight: 400\">\u0110i\u1ec1u g\u00ec x\u1ea3y ra trong cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks v\u00e0o DEX v\u1edbi AMM s\u1ea3n ph\u1ea9m kh\u00f4ng \u0111\u1ed5i nh\u01b0 Uniswap y\u00eau c\u1ea7u t\u1ed5ng c\u1ed9ng hai giao d\u1ecbch \u0111\u1ed9c h\u1ea1i.<\/span><\/p>\n<p><span style=\"font-weight: 400\">M\u1ed9t giao d\u1ecbch x\u1ea3y ra tr\u01b0\u1edbc giao d\u1ecbch c\u1ee7a n\u1ea1n nh\u00e2n, trong khi giao d\u1ecbch c\u00f2n l\u1ea1i di\u1ec5n ra sau \u0111\u00f3, t\u1ea1o ra m\u1ed9t <\/span><b>&#8216;sandwich&#8217; <\/b><span style=\"font-weight: 400\">giao d\u1ecbch v\u1edbi n\u1ea1n nh\u00e2n \u1edf gi\u1eefa, \u0111\u1eb7t t\u00ean cho cu\u1ed9c t\u1ea5n c\u00f4ng.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u0110\u1ea7u ti\u00ean, k\u1ebb t\u1ea5n c\u00f4ng x\u00e1c \u0111\u1ecbnh m\u1ed9t giao d\u1ecbch n\u1ea1n nh\u00e2n ti\u1ec1m n\u0103ng. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 lo\u1ea1i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 cao, mang l\u1ea1i ti\u1ec1m n\u0103ng l\u1ee3i nhu\u1eadn t\u1ed1t h\u01a1n. C\u00e1c kho\u1ea3n ph\u00ed bao g\u1ed3m trong giao d\u1ecbch c\u0169ng c\u00f3 th\u1ec3 l\u00e0m t\u0103ng t\u00ednh nh\u1ea1y c\u1ea3m c\u1ee7a n\u00f3 \u0111\u1ed1i v\u1edbi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Sau khi \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y, k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd g\u1eedi giao d\u1ecbch mua cho c\u00f9ng m\u1ed9t c\u1eb7p t\u00e0i s\u1ea3n s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u01b0\u1edbc giao d\u1ecbch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch \u0111\u1eb7t m\u1ee9c ph\u00ed cao h\u01a1n \u0111\u1ec3 chuy\u1ec3n m\u00e3 th\u00f4ng b\u00e1o sang DEX v\u00e0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <\/span><b>\u2018frontrunning\u2019<\/b><span style=\"font-weight: 400\">.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Giao d\u1ecbch c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng n\u00e0y l\u00e0m thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n nh\u00f3m thanh kho\u1ea3n, d\u1eabn \u0111\u1ebfn t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i c\u00f3 s\u1eb5n cho c\u00e1c giao d\u1ecbch ti\u1ebfp theo kh\u00e1c v\u1edbi t\u1ef7 gi\u00e1 ban \u0111\u1ea7u \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb cho nh\u1eefng ng\u01b0\u1eddi d\u00f9ng kh\u00e1c c\u00f3 giao d\u1ecbch ch\u01b0a \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/span><\/p>\n<p><span style=\"font-weight: 400\">N\u1ebfu giao d\u1ecbch c\u1ee7a n\u1ea1n nh\u00e2n li\u00ean quan \u0111\u1ebfn ho\u00e1n \u0111\u1ed5i kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, t\u00ecnh h\u00ecnh s\u1ebd tr\u1edf n\u00ean tr\u1ea7m tr\u1ecdng h\u01a1n &#8211; nhi\u1ec1u m\u00e3 th\u00f4ng b\u00e1o h\u01a1n \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c c\u1ea7n nhi\u1ec1u thanh kho\u1ea3n h\u01a1n v\u00e0 \u0111\u1ec3 th\u1ef1c hi\u1ec7n, ho\u00e1n \u0111\u1ed5i s\u1ebd c\u1ea7n ph\u1ea3i c\u00f3 gi\u00e1 th\u1ea7u cao h\u01a1n t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i <\/span><b>&#8216;true&#8217;<\/b><span style=\"font-weight: 400\">.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c thi\u1ebft l\u1eadp kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 ph\u00f9 h\u1ee3p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft trong giao d\u1ecbch DEX (xem b\u00ean d\u01b0\u1edbi).<\/span><\/p>\n<p><span style=\"font-weight: 400\">Sau khi vi\u1ec7c ho\u00e1n \u0111\u1ed5i n\u1ea1n nh\u00e2n ho\u00e0n t\u1ea5t v\u1edbi t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i kh\u00f4ng thu\u1eadn l\u1ee3i, k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd ti\u1ebfp t\u1ee5c th\u1ef1c hi\u1ec7n giao d\u1ecbch b\u00e1n c\u1eb7p t\u00e0i s\u1ea3n \u0111\u1ec3 kh\u00f3a l\u1ee3i nhu\u1eadn c\u1ee7a h\u1ecd. Giao d\u1ecbch th\u1ee9 hai n\u00e0y <\/span><b>\u2018backruns<\/b><span style=\"font-weight: 400\">\u2019 n\u1ea1n nh\u00e2n, ho\u00e0n th\u00e0nh chi\u1ebfc Sandwich.<\/span><\/p>\n<figure id=\"attachment_22904\" aria-describedby=\"caption-attachment-22904\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-22904\" src=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4.jpg\" alt=\"Sandwich Attacks\" width=\"900\" height=\"506\" srcset=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4.jpg 1200w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4-300x169.jpg 300w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4-1024x576.jpg 1024w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4-150x84.jpg 150w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4-768x432.jpg 768w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/a1-4-450x253.jpg 450w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-22904\" class=\"wp-caption-text\">M\u1ed9t giao d\u1ecbch x\u1ea3y ra tr\u01b0\u1edbc giao d\u1ecbch c\u1ee7a n\u1ea1n nh\u00e2n, trong khi giao d\u1ecbch c\u00f2n l\u1ea1i di\u1ec5n ra sau \u0111\u00f3, t\u1ea1o ra m\u1ed9t &#8216;sandwich&#8217; giao d\u1ecbch v\u1edbi n\u1ea1n nh\u00e2n \u1edf gi\u1eefa, \u0111\u1eb7t t\u00ean cho cu\u1ed9c t\u1ea5n c\u00f4ng.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Cac_cuoc_tan_cong_Sandwich_Attacks_co_the_xay_ra_nhu_the_nao\"><\/span><span style=\"font-weight: 400\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks c\u00f3 th\u1ec3 x\u1ea3y ra nh\u01b0 th\u1ebf n\u00e0o?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng th\u00e0nh c\u00f4ng trong vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o k\u1ef9 n\u0103ng c\u1ee7a ch\u00fang. Nh\u1edd t\u00ednh ch\u1ea5t m\u1edf c\u1ee7a DeFi v\u00e0 t\u00ednh minh b\u1ea1ch c\u1ee7a c\u00e1c blockchain c\u00f4ng khai, vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u00e1c giao d\u1ecbch n\u1ea1n nh\u00e2n ph\u00f9 h\u1ee3p tr\u1edf n\u00ean qu\u00e1 d\u1ec5 d\u00e0ng.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich h\u1ea7u h\u1ebft \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n t\u1ef1 \u0111\u1ed9ng, v\u1edbi c\u00e1c t\u00e1c nh\u00e2n \u0111\u1ed9c h\u1ea1i x\u00e2y d\u1ef1ng c\u00e1c bot x\u00e1c \u0111\u1ecbnh n\u1ea1n nh\u00e2n v\u00e0 th\u1eadm ch\u00ed m\u00f4 ph\u1ecfng cu\u1ed9c t\u1ea5n c\u00f4ng tr\u01b0\u1edbc khi kh\u1edfi ch\u1ea1y n\u00f3 tr\u00ean blockchain.<\/span><\/p>\n<p><span style=\"font-weight: 400\">B\u1ea3n ch\u1ea5t t\u1ef1 \u0111\u1ed9ng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng s\u1ebd lo\u1ea1i b\u1ecf kh\u1ea3 n\u0103ng x\u1ea3y ra sai s\u00f3t khi ti\u1ebfn h\u00e0nh ch\u00fang th\u00e0nh c\u00f4ng &#8211; m\u00f4 ph\u1ecfng s\u1ebd t\u00ednh \u0111\u1ebfn c\u00e1c \u0111i\u1ec1u ki\u1ec7n ch\u00ednh x\u00e1c tr\u00ean th\u1ecb tr\u01b0\u1eddng v\u00e0o th\u1eddi \u0111i\u1ec3m \u0111\u00f3, \u0111\u1ec3 l\u1ea1i r\u1ea5t \u00edt c\u01a1 h\u1ed9i.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Do \u0111\u00f3, c\u00e1c bot ch\u1ea1y tr\u01b0\u1edbc n\u00e0y l\u00e0 l\u00fd do khi\u1ebfn c\u00e1c nh\u00e0 giao d\u1ecbch DEX \u00edt kinh nghi\u1ec7m h\u01a1n b\u1ecb m\u1ea5t ti\u1ec1n khi giao d\u1ecbch, c\u00f9ng v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 cao.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach_tranh_cac_cuoc_tan_cong_Sandwich_Attacks_trong_DeFi\"><\/span><span style=\"font-weight: 400\">C\u00e1ch tr\u00e1nh c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks trong DeFi<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">T\u1eeb th\u00f4ng tin tr\u00ean, kh\u00f4ng c\u1ea7n ph\u1ea3i n\u00f3i r\u1eb1ng y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 tr\u00e1nh c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich DeFi l\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 tr\u01b0\u1ee3t m\u1ed9t c\u00e1ch th\u00edch h\u1ee3p.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Ngo\u00e0i vi\u1ec7c hi\u1ec3u m\u1ee9c \u0111\u1ed9 tr\u01b0\u1ee3t gi\u00e1, l\u00fd do v\u00e0 th\u1eddi \u0111i\u1ec3m n\u00f3 x\u1ea3y ra, ng\u01b0\u1eddi d\u00f9ng DEX c\u1ea7n \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 c\u1ee7a h\u1ecd \u0111\u1ec3 kh\u00f4ng tr\u1edf th\u00e0nh con m\u1ed3i d\u1ec5 d\u00e0ng cho c\u00e1c bot t\u1ea5n c\u00f4ng sandwich.<\/span><\/p>\n<p><span style=\"font-weight: 400\">S\u1ef1 tr\u01b0\u1ee3t gi\u00e1 gia t\u0103ng trong c\u00e1c th\u1ecb tr\u01b0\u1eddng k\u00e9m thanh kho\u1ea3n v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c \u0111i\u1ec1u ki\u1ec7n thanh kho\u1ea3n l\u00e0 m\u1ed9t tr\u1ee3 gi\u00fap l\u1edbn khi giao d\u1ecbch m\u1ed9t c\u1eb7p t\u00e0i s\u1ea3n m\u1ed9t c\u00e1ch an to\u00e0n.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Ngo\u00e0i ra, vi\u1ec7c thi\u1ebft l\u1eadp kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t th\u1ea5p l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ch\u1eb7n radar c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng. V\u00ed d\u1ee5: kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 20% cho AMM (v\u00e0 b\u1ea5t k\u1ef3 ng\u01b0\u1eddi quan s\u00e1t n\u00e0o) bi\u1ebft r\u1eb1ng m\u1ed9t nh\u00e0 giao d\u1ecbch s\u1eb5n s\u00e0ng ch\u1ea5p nh\u1eadn t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i l\u00ean t\u1edbi 20% \u201ct\u1ec7 h\u01a1n\u201d so v\u1edbi t\u1ef7 gi\u00e1 giao ngay &#8211; m\u1ed9t t\u00edn hi\u1ec7u c\u1ed5 \u0111i\u1ec3n cho nh\u1eefng k\u1ebb Sandwich Attacks r\u1eb1ng h\u1ecd c\u00f3 th\u1ec3 b\u1ecf t\u00fai kho\u1ea3n ch\u00eanh l\u1ec7ch. cho ch\u00ednh h\u1ecd.<\/span><\/p>\n<p><span style=\"font-weight: 400\">H\u1ea7u h\u1ebft c\u00e1c DEX \u0111\u1ec1u \u0111\u1ec1 xu\u1ea5t m\u1ee9c tr\u01b0\u1ee3t t\u1ed1i \u0111a d\u01b0\u1edbi 2%. Tuy nhi\u00ean, kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 qu\u00e1 th\u1ea5p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn giao d\u1ecbch th\u1ea5t b\u1ea1i, v\u00ec t\u00ednh thanh kho\u1ea3n c\u00f3 ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ee7 \u01b0u \u0111\u00e3i \u0111\u1ec3 th\u1ef1c hi\u1ec7n to\u00e0n b\u1ed9 ho\u1eb7c th\u1eadm ch\u00ed m\u1ed9t ph\u1ea7n giao d\u1ecbch ho\u00e1n \u0111\u1ed5i theo t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i mong mu\u1ed1n.<\/span><\/p>\n<p><span style=\"font-weight: 400\">M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p b\u1ed5 sung, t\u00f9y thu\u1ed9c v\u00e0o m\u1ee9c ph\u00ed v\u00e0 t\u00ednh thanh kho\u1ea3n t\u1ea1i th\u1eddi \u0111i\u1ec3m ho\u00e1n \u0111\u1ed5i, l\u00e0 chia h\u1ee3p \u0111\u1ed3ng ho\u00e1n \u0111\u1ed5i \u0111\u00f3 th\u00e0nh nhi\u1ec1u h\u1ee3p \u0111\u1ed3ng nh\u1ecf h\u01a1n.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 kh\u1ea3 n\u0103ng x\u1ea3y ra m\u1ed9t cu\u1ed9c Sandwich Attacks \u0111\u1ec3 ki\u1ebfm l\u1ee3i t\u1eeb kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 s\u1ebd gi\u1ea3m \u0111i do y\u00eau c\u1ea7u thanh kho\u1ea3n t\u01b0\u01a1ng \u0111\u1ed1i \u00edt h\u01a1n \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y t\u1eebng ph\u1ea7n c\u1ee7a giao d\u1ecbch. Do \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng \u00edt g\u1eb7p r\u1ee7i ro h\u01a1n khi n\u00f3i \u0111\u1ebfn t\u1ef7 gi\u00e1 h\u1ed1i \u0111o\u00e1i, b\u1edfi v\u00ec m\u1ed7i giao d\u1ecbch nh\u1ecf h\u01a1n c\u00f3 t\u00e1c \u0111\u1ed9ng \u00edt h\u1eefu h\u00ecnh h\u01a1n \u0111\u1ebfn nh\u00f3m thanh kho\u1ea3n AMM.<\/span><\/p>\n<figure id=\"attachment_22905\" aria-describedby=\"caption-attachment-22905\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-22905\" src=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min.png\" alt=\"Sandwich Attacks\" width=\"900\" height=\"476\" srcset=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min.png 2524w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-300x159.png 300w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-1024x541.png 1024w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-150x79.png 150w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-768x406.png 768w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-1536x812.png 1536w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-2048x1082.png 2048w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-450x238.png 450w, https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Anh-chup-Man-hinh-2023-09-09-luc-14.16.06-min-1200x634.png 1200w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-22905\" class=\"wp-caption-text\">Ngo\u00e0i vi\u1ec7c hi\u1ec3u m\u1ee9c \u0111\u1ed9 tr\u01b0\u1ee3t gi\u00e1, l\u00fd do v\u00e0 th\u1eddi \u0111i\u1ec3m n\u00f3 x\u1ea3y ra, ng\u01b0\u1eddi d\u00f9ng DEX c\u1ea7n \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 c\u1ee7a h\u1ecd \u0111\u1ec3 kh\u00f4ng tr\u1edf th\u00e0nh con m\u1ed3i d\u1ec5 d\u00e0ng cho c\u00e1c bot t\u1ea5n c\u00f4ng sandwich.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><span style=\"font-weight: 400\">K\u1ebft lu\u1eadn<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich <a href=\"https:\/\/www.fiahub.com\/blog\/tag\/defi\/\">DeFi<\/a> ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c s\u00e0n giao d\u1ecbch phi t\u1eadp trung (DEX) v\u00e0 c\u00f3 th\u1ec3 \u0111\u1eb7c bi\u1ec7t nguy hi\u1ec3m khi c\u00e1c giao d\u1ecbch ho\u00e1n \u0111\u1ed5i l\u1edbn \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c nh\u00e0 giao d\u1ecbch \u00edt kinh nghi\u1ec7m h\u01a1n. B\u1ea3n ch\u1ea5t m\u1edf c\u1ee7a giao d\u1ecbch DEX v\u00e0 blockchain c\u00f4ng khai c\u00f3 ngh\u0129a l\u00e0 b\u1ea5t k\u1ef3 ai c\u0169ng c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh n\u1ea1n nh\u00e2n ph\u00f9 h\u1ee3p c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng sandwich v\u00e0 nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng th\u1eadm ch\u00ed c\u00f2n t\u1ef1 \u0111\u1ed9ng h\u00f3a quy tr\u00ecnh \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 c\u00e1c giao d\u1ecbch c\u00f3 l\u1ee3i nh\u1ea5t \u0111\u1ec3 chi\u1ebfm \u0111o\u1ea1t.<\/span><\/p>\n<p><i><span style=\"font-weight: 400\">\u0110i\u1ec1u \u0111\u00f3 n\u00f3i l\u00ean r\u1eb1ng, v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich Attacks kh\u00f4ng ph\u1ea3i l\u00e0 &#8216;\u0111\u00e1nh c\u1eafp&#8217; token c\u1ee7a n\u1ea1n nh\u00e2n; thay v\u00e0o \u0111\u00f3, ch\u00fang l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 thao t\u00fang th\u1ecb tr\u01b0\u1eddng nh\u1eb1m m\u1ee5c ti\u00eau sinh l\u1eddi.<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400\">Do \u0111\u00f3, tr\u00e1ch nhi\u1ec7m c\u1ee7a ch\u00ednh ng\u01b0\u1eddi d\u00f9ng l\u00e0 b\u1ea3o v\u1ec7 ti\u1ec1n c\u1ee7a h\u1ecd kh\u1ecfi b\u1ecb thao t\u00fang tr\u01b0\u1edbc. Khi ti\u1ebfn h\u00e0nh ho\u00e1n \u0111\u1ed5i DEX, ph\u00ed m\u1ea1ng ph\u00f9 h\u1ee3p ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00ednh k\u00e8m v\u00e0o giao d\u1ecbch ho\u00e1n \u0111\u1ed5i v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n thanh kho\u1ea3n hi\u1ec7n t\u1ea1i. C\u1ea3 \u0111i\u1ec1u ki\u1ec7n thanh kho\u1ea3n tr\u00ean ch\u00ednh DEX v\u00e0 m\u1ee9c ph\u00ed tr\u00ean m\u1ea1ng c\u01a1 b\u1ea3n \u0111\u1ec1u \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong kh\u1ea3 n\u0103ng sinh l\u1eddi c\u1ee7a cu\u1ed9c Sandwich Attacks.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u0110\u1ec3 gi\u1ea3m thi\u1ec3u ph\u00ed cho c\u00e1c giao d\u1ecbch d\u1eabn \u0111\u1ea7u l\u00e0m x\u00f3i m\u00f2n l\u1ee3i nhu\u1eadn c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich, c\u00f3 \u00fd ki\u1ebfn \u200b\u200bcho r\u1eb1ng m\u1ed9t s\u1ed1 k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 c\u1ed9ng t\u00e1c v\u1edbi ch\u00ednh c\u00e1c th\u1ee3 \u0111\u00e0o \u0111\u1ec3 giao d\u1ecbch d\u1eabn tr\u01b0\u1edbc n\u1ea1n nh\u00e2n th\u1ef1c hi\u1ec7n th\u00e0nh c\u00f4ng tr\u01b0\u1edbc, b\u1ea5t k\u1ec3 m\u1ee9c ph\u00ed y\u00eau c\u1ea7u l\u00e0 bao nhi\u00eau.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap\"><\/span><span style=\"font-weight: 400\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Cuoc_tan_cong_Sandwich_trong_DeFi_la_gi\"><\/span><span style=\"font-weight: 400\">Cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich trong DeFi l\u00e0 g\u00ec?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Trong DeFi, cu\u1ed9c Sandwich Attacks l\u00e0 m\u1ed9t c\u00e1ch thu l\u1ee3i nhu\u1eadn t\u1eeb kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng DEX b\u1eb1ng c\u00e1ch ch\u1ea1y tr\u01b0\u1edbc c\u00e1c giao d\u1ecbch ti\u1ec1n \u0111i\u1ec7n t\u1eed v\u00e0 khai th\u00e1c c\u00e1c \u0111i\u1ec1u ki\u1ec7n thanh kho\u1ea3n AMM.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cac_cuoc_tan_cong_Sandwich_co_mang_lai_loi_nhuan_khong\"><\/span><span style=\"font-weight: 400\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich c\u00f3 mang l\u1ea1i l\u1ee3i nhu\u1eadn kh\u00f4ng?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Kh\u1ea3 n\u0103ng sinh l\u1eddi c\u1ee7a c\u00e1c cu\u1ed9c Sandwich Attacks kh\u00e1c nhau \u2013 kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 c\u1ee7a n\u1ea1n nh\u00e2n c\u00e0ng l\u1edbn v\u00e0 c\u1eb7p ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u00e0ng k\u00e9m thanh kho\u1ea3n th\u00ec k\u1ebb t\u1ea5n c\u00f4ng c\u00e0ng c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng ki\u1ebfm ti\u1ec1n. Ph\u00ed giao d\u1ecbch cho m\u1ea1ng blockchain c\u01a1 b\u1ea3n c\u0169ng quy\u1ebft \u0111\u1ecbnh l\u1ee3i nhu\u1eadn.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tai_sao_cac_cuoc_tan_cong_Sandwich_xay_ra\"><\/span><span style=\"font-weight: 400\">T\u1ea1i sao c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich x\u1ea3y ra?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ngg Sandwich Attacks l\u1ee3i d\u1ee5ng s\u1ef1 thi\u1ebfu kinh nghi\u1ec7m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00f4i tr\u01b0\u1eddng trao \u0111\u1ed5i \u00edt thanh kho\u1ea3n h\u01a1n. Vi\u1ec7c \u0111\u1eb7t kh\u1ea3 n\u0103ng ch\u1ecbu tr\u01b0\u1ee3t gi\u00e1 cao v\u00e0 ph\u00ed giao d\u1ecbch m\u1ea1ng th\u1ea5p th\u1ec3 hi\u1ec7n s\u1ef1 k\u1ebft h\u1ee3p quan tr\u1ecdng gi\u00fap nh\u00e0 giao d\u1ecbch DEX c\u00f3 th\u1ec3 khai th\u00e1c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng k\u1eb9p.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Co_the_tranh_duoc_cac_cuoc_tan_cong_Sandwich\"><\/span><span style=\"font-weight: 400\">C\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Ki\u1ebfn th\u1ee9c v\u1eefng ch\u1eafc v\u1ec1 k\u1ef9 thu\u1eadt giao d\u1ecbch DEX v\u00e0 \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u01b0\u1ee3t gi\u00e1, gi\u00fap gi\u1ea3m kh\u1ea3 n\u0103ng tr\u1edf th\u00e0nh n\u1ea1n nh\u00e2n c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng Sandwich. Vi\u1ec7c tr\u00e1nh c\u00e1c giao d\u1ecbch l\u1edbn c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m l\u1ee3i nhu\u1eadn c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng ti\u1ec1m n\u0103ng.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u0110\u1eebng qu\u00ean m\u1ecdi th\u1eafc m\u1eafc v\u1ec1 th\u1ecb tr\u01b0\u1eddng ti\u1ec1n k\u1ef9 thu\u1eadt s\u1ed1, vui l\u00f2ng li\u00ean h\u1ec7 \u0111\u1ed9i ng\u0169 Support c\u1ee7a Fiahub 24\/7.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sandwich Attacks l\u00e0 m\u1ed9t d\u1ea1ng ho\u1ea1t \u0111\u1ed9ng giao d\u1ecbch \u0111\u1ed9c h\u1ea1i tr\u00ean c\u00e1c s\u00e0n giao d\u1ecbch t\u00e0i ch\u00ednh nh\u1eb1m t\u00ecm c\u00e1ch ki\u1ebfm l\u1ee3i t\u1eeb giao d\u1ecbch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng chi ph\u00ed c\u1ee7a ch\u00ednh h\u1ecd. B\u1eaft \u0111\u1ea7u tr\u00ean th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n, c\u00e1c cu\u1ed9c Sandwich Attacks \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn trong giao d\u1ecbch ti\u1ec1n<\/p>\n","protected":false},"author":24,"featured_media":22902,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21850],"tags":[23019,22736,23018,3258],"class_list":{"0":"post-22901","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tu-dien-crypto","8":"tag-attacks","9":"tag-defi-scams","10":"tag-sandwich-attacks","11":"tag-scam"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Sandwich Attacks trong DeFi l\u00e0 g\u00ec? - Fiahub<\/title>\n<meta name=\"description\" content=\"Sandwich Attacks l\u00e0 m\u1ed9t d\u1ea1ng ho\u1ea1t \u0111\u1ed9ng giao d\u1ecbch \u0111\u1ed9c h\u1ea1i tr\u00ean c\u00e1c s\u00e0n giao d\u1ecbch t\u00e0i ch\u00ednh nh\u1eb1m t\u00ecm c\u00e1ch ki\u1ebfm l\u1ee3i t\u1eeb giao d\u1ecbch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sandwich Attacks trong DeFi l\u00e0 g\u00ec?\" \/>\n<meta property=\"og:description\" content=\"Sandwich Attacks l\u00e0 m\u1ed9t d\u1ea1ng ho\u1ea1t \u0111\u1ed9ng giao d\u1ecbch \u0111\u1ed9c h\u1ea1i tr\u00ean c\u00e1c s\u00e0n giao d\u1ecbch t\u00e0i ch\u00ednh nh\u1eb1m t\u00ecm c\u00e1ch ki\u1ebfm l\u1ee3i t\u1eeb giao d\u1ecbch c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/\" \/>\n<meta property=\"og:site_name\" content=\"Fiahub Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/FiahubVN\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-07T03:12:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-09T07:22:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Fiahub_Glossary_SandwichAttacks.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"576\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Le Hoang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@FIAHUBVN\" \/>\n<meta name=\"twitter:site\" content=\"@FIAHUBVN\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Le Hoang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"17 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/\"},\"author\":{\"name\":\"Le Hoang\",\"@id\":\"https:\/\/www.fiahub.com\/blog\/#\/schema\/person\/438ca2054bd04d8ef374b9dd54ed3418\"},\"headline\":\"Sandwich Attacks trong DeFi l\u00e0 g\u00ec?\",\"datePublished\":\"2023-09-07T03:12:53+00:00\",\"dateModified\":\"2023-09-09T07:22:47+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/\"},\"wordCount\":3331,\"publisher\":{\"@id\":\"https:\/\/www.fiahub.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.fiahub.com\/blog\/wp-content\/uploads\/2023\/09\/Fiahub_Glossary_SandwichAttacks.png\",\"keywords\":[\"Attacks\",\"DeFi Scams\",\"Sandwich Attacks\",\"Scam\"],\"articleSection\":[\"T\u1eeb \u0111i\u1ec3n Crypto\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/\",\"url\":\"https:\/\/www.fiahub.com\/blog\/sandwich-attacks-trong-defi-la-gi\/\",\"name\":\"Sandwich Attacks trong DeFi l\u00e0 g\u00ec? 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