{"id":2479,"date":"2025-12-21T00:00:26","date_gmt":"2025-12-20T17:00:26","guid":{"rendered":"https:\/\/technest.com.vn\/?p=2479"},"modified":"2025-12-18T10:17:23","modified_gmt":"2025-12-18T03:17:23","slug":"bao-mat-blockchain","status":"publish","type":"post","link":"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/","title":{"rendered":"B\u1ea3o m\u1eadt Blockchain l\u00e0 g\u00ec? M\u1ed1i \u0111e d\u1ecda v\u00e0 t\u01b0\u01a1ng lai"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Trong k\u1ef7 nguy\u00ean s\u1ed1 h\u00f3a, c\u00f4ng ngh\u1ec7 Blockchain \u0111\u00e3 n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng, kh\u00f4ng ch\u1ec9 trong l\u0129nh v\u1ef1c t\u00e0i ch\u00ednh m\u00e0 c\u00f2n m\u1edf r\u1ed9ng sang nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c. Tuy nhi\u00ean, s\u1ee9c m\u1ea1nh c\u1ed1t l\u00f5i l\u00e0m n\u00ean gi\u00e1 tr\u1ecb c\u1ee7a Blockchain ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt v\u01b0\u1ee3t tr\u1ed9i. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u1ec1 <\/span><a title=\"B\u1ea3o m\u1eadt Blockchain\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/\"><b>B\u1ea3o m\u1eadt Blockchain<\/b><\/a><span style=\"font-weight: 400;\"> kh\u00f4ng ch\u1ec9 l\u00e0 n\u1eafm b\u1eaft m\u1ed9t kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt m\u00e0 c\u00f2n l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 khai th\u00e1c to\u00e0n b\u1ed9 ti\u1ec1m n\u0103ng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u00e0y. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o c\u00e1c l\u1edbp b\u1ea3o m\u1eadt, nh\u1eefng th\u00e1ch th\u1ee9c ti\u1ec1m \u1ea9n v\u00e0 t\u01b0\u01a1ng lai c\u1ee7a b\u1ea3o m\u1eadt trong th\u1ebf gi\u1edbi Blockchain.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 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\" style=\"cursor:inherit\">Table of Contents<\/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\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" 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><\/span><\/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:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Bao_mat_Blockchain_la_gi\" >B\u1ea3o m\u1eadt Blockchain 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:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Blockchain_an_toan_nhu_the_nao\" >Blockchain an to\u00e0n 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-3\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Bao_mat_theo_tung_loai_Blockchain\" >B\u1ea3o m\u1eadt theo t\u1eebng lo\u1ea1i Blockchain<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Cac_moi_de_doa_chinh_doi_voi_bao_mat_Blockchain\" >C\u00e1c m\u1ed1i \u0111e d\u1ecda ch\u00ednh \u0111\u1ed1i v\u1edbi b\u1ea3o m\u1eadt Blockchain<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Tan_cong_51\" >T\u1ea5n c\u00f4ng 51%<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Chi_tieu_kep_Double_Spending\" >Chi ti\u00eau k\u00e9p (Double Spending)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Tan_cong_Sybil\" >T\u1ea5n c\u00f4ng Sybil<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Lo_hong_trong_hop_dong_thong_minh\" >L\u1ed7 h\u1ed5ng trong h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Ung_dung_bao_mat_Blockchain_trong_doanh_nghiep\" >\u1ee8ng d\u1ee5ng b\u1ea3o m\u1eadt Blockchain trong doanh nghi\u1ec7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Xu_huong_bao_mat_Blockchain_trong_tuong_lai\" >Xu h\u01b0\u1edbng b\u1ea3o m\u1eadt Blockchain trong t\u01b0\u01a1ng lai<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#Cau_hoi_thuong_gap_ve_bao_mat_Blockchain\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 b\u1ea3o m\u1eadt Blockchain<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#1_Du_lieu_tren_Blockchain_co_the_bi_thay_doi_khong\" >1. D\u1eef li\u1ec7u tr\u00ean Blockchain c\u00f3 th\u1ec3 b\u1ecb thay \u0111\u1ed5i kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#2_Lieu_vi_tien_dien_tu_cua_toi_co_an_toan_tren_Blockchain_khong\" >2. Li\u1ec7u v\u00ed ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u1ee7a t\u00f4i c\u00f3 an to\u00e0n tr\u00ean Blockchain kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/technest.com.vn\/vi\/bao-mat-blockchain\/#3_Blockchain_co_can_cac_bien_phap_bao_mat_truyen_thong_khong\" >3. Blockchain c\u00f3 c\u1ea7n c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt truy\u1ec1n th\u1ed1ng kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Bao_mat_Blockchain_la_gi\"><\/span><b>B\u1ea3o m\u1eadt Blockchain l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Kh\u00e1i ni\u1ec7m <\/span><b>B\u1ea3o m\u1eadt Blockchain<\/b><span style=\"font-weight: 400;\"> bao h\u00e0m t\u1ea5t c\u1ea3 c\u00e1c c\u01a1 ch\u1ebf, giao th\u1ee9c v\u00e0 c\u00e1c l\u1edbp ph\u00f2ng th\u1ee7 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 <\/span><b>s\u1ed5 c\u00e1i ph\u00e2n t\u00e1n (distributed ledger)<\/b><span style=\"font-weight: 400;\"> kh\u1ecfi c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i, gian l\u1eadn, v\u00e0 c\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng kh\u00e1c. M\u1ee5c ti\u00eau cu\u1ed1i c\u00f9ng l\u00e0 <\/span><b>\u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n (Integrity), t\u00ednh b\u1ea5t bi\u1ebfn (Immutability) v\u00e0 t\u00ednh s\u1eb5n c\u00f3 (Availability) c\u1ee7a d\u1eef li\u1ec7u <\/b><span style=\"font-weight: 400;\">\u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean Blockchain.<\/span><\/p>\n<figure id=\"attachment_2480\" aria-describedby=\"caption-attachment-2480\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2480 size-full\" title=\"B\u1ea3o m\u1eadt Blockchain l\u00e0 g\u00ec?\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-1.webp\" alt=\"B\u1ea3o m\u1eadt Blockchain l\u00e0 g\u00ec?\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-1.webp 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-1-300x200.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-2480\" class=\"wp-caption-text\">B\u1ea3o m\u1eadt Blockchain l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n, h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng Blockchain l\u00e0 m\u1ed9t chu\u1ed7i c\u00e1c kh\u1ed1i (block) \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng m\u1eadt m\u00e3. B\u1ea3o m\u1eadt Blockchain ch\u00ednh l\u00e0 t\u1ed5ng h\u00f2a c\u1ee7a nhi\u1ec1u y\u1ebfu t\u1ed1: vi\u1ec7c s\u1eed d\u1ee5ng <\/span><b>c\u00e1c h\u00e0m b\u0103m (hash functions) <\/b><span style=\"font-weight: 400;\">\u0111\u1ec3 t\u1ea1o ra d\u1ea5u v\u00e2n tay duy nh\u1ea5t cho m\u1ed7i kh\u1ed1i; <\/span><b>c\u01a1 ch\u1ebf \u0111\u1ed3ng thu\u1eadn (consensus mechanism) <\/b><span style=\"font-weight: 400;\">\u0111\u1ec3 x\u00e1c minh v\u00e0 ph\u00ea duy\u1ec7t c\u00e1c giao d\u1ecbch; v\u00e0 <\/span><b>m\u00e3 h\u00f3a kh\u00f3a c\u00f4ng khai\/kh\u00f3a ri\u00eang t\u01b0 (public\/private key encryption) <\/b><span style=\"font-weight: 400;\">\u0111\u1ec3 x\u00e1c \u0111\u1ecbnh quy\u1ec1n s\u1edf h\u1eefu t\u00e0i s\u1ea3n. S\u1ef1 k\u1ebft h\u1ee3p ch\u1eb7t ch\u1ebd c\u1ee7a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y t\u1ea1o n\u00ean m\u1ed9t h\u1ec7 th\u1ed1ng t\u1ef1 v\u1ec7 phi t\u1eadp trung m\u1ea1nh m\u1ebd.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Blockchain_an_toan_nhu_the_nao\"><\/span><b>Blockchain an to\u00e0n nh\u01b0 th\u1ebf n\u00e0o?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Blockchain \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 an to\u00e0n nh\u1ea5t hi\u1ec7n nay nh\u1edd v\u00e0o c\u1ea5u tr\u00fac thi\u1ebft k\u1ebf \u0111\u1ed9c \u0111\u00e1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i c\u1ee7a n\u00f3. S\u1ef1 an to\u00e0n n\u00e0y kh\u00f4ng \u0111\u1ebfn t\u1eeb m\u1ed9t c\u01a1 quan trung \u01b0\u01a1ng m\u00e0 t\u1eeb s\u1ef1 ph\u00e2n t\u00e1n v\u00e0 c\u00e1c nguy\u00ean t\u1eafc m\u1eadt m\u00e3 h\u1ecdc.<\/span><\/p>\n<figure id=\"attachment_2481\" aria-describedby=\"caption-attachment-2481\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2481 size-full\" title=\"Blockchain an to\u00e0n nh\u01b0 th\u1ebf n\u00e0o?\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-2.webp\" alt=\"Blockchain an to\u00e0n nh\u01b0 th\u1ebf n\u00e0o?\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-2.webp 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-2-300x200.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-2481\" class=\"wp-caption-text\">Blockchain an to\u00e0n nh\u01b0 th\u1ebf n\u00e0o?<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">S\u1ef1 an to\u00e0n c\u1ee7a Blockchain \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean ba tr\u1ee5 c\u1ed9t ch\u00ednh.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1ee9 nh\u1ea5t<\/b><span style=\"font-weight: 400;\"> l\u00e0 <\/span><b>M\u1eadt m\u00e3 h\u1ecdc (Cryptography)<\/b><span style=\"font-weight: 400;\">: m\u1ed7i kh\u1ed1i ch\u1ee9a m\u1ed9t h\u00e0m b\u0103m m\u1eadt m\u00e3 c\u1ee7a kh\u1ed1i tr\u01b0\u1edbc \u0111\u00f3, t\u1ea1o th\u00e0nh m\u1ed9t chu\u1ed7i li\u00ean t\u1ee5c. N\u1ebfu m\u1ed9t k\u1ebb t\u1ea5n c\u00f4ng thay \u0111\u1ed5i d\u1eef li\u1ec7u trong m\u1ed9t kh\u1ed1i, h\u00e0m b\u0103m c\u1ee7a kh\u1ed1i \u0111\u00f3 s\u1ebd thay \u0111\u1ed5i, l\u00e0m m\u1ea5t hi\u1ec7u l\u1ef1c c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c kh\u1ed1i ti\u1ebfp theo, v\u00e0 s\u1ef1 thay \u0111\u1ed5i n\u00e0y s\u1ebd b\u1ecb m\u1ea1ng l\u01b0\u1edbi ph\u00e1t hi\u1ec7n ngay l\u1eadp t\u1ee9c.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1ee9 hai<\/b><span style=\"font-weight: 400;\"> l\u00e0 <\/span><b>T\u00ednh phi t\u1eadp trung (Decentralization)<\/b><span style=\"font-weight: 400;\">: d\u1eef li\u1ec7u kh\u00f4ng n\u1eb1m \u1edf m\u1ed9t m\u00e1y ch\u1ee7 duy nh\u1ea5t m\u00e0 \u0111\u01b0\u1ee3c sao ch\u00e9p v\u00e0 ph\u00e2n t\u00e1n tr\u00ean <\/span><b>h\u00e0ng ng\u00e0n ho\u1eb7c h\u00e0ng tri\u1ec7u n\u00fat (node) <\/b><span style=\"font-weight: 400;\">trong m\u1ea1ng l\u01b0\u1edbi. \u0110\u1ec3 thay \u0111\u1ed5i d\u1eef li\u1ec7u, k\u1ebb t\u1ea5n c\u00f4ng ph\u1ea3i ki\u1ec3m so\u00e1t v\u00e0 thay \u0111\u1ed5i th\u00f4ng tin tr\u00ean \u00edt nh\u1ea5t <\/span><b>51% s\u1ed1 n\u00fat<\/b><span style=\"font-weight: 400;\">, m\u1ed9t vi\u1ec7c g\u1ea7n nh\u01b0 b\u1ea5t kh\u1ea3 thi.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u1ee9 ba<\/b><span style=\"font-weight: 400;\"> l\u00e0 <\/span><b>C\u01a1 ch\u1ebf \u0111\u1ed3ng thu\u1eadn (Consensus Mechanism)<\/b><span style=\"font-weight: 400;\">: c\u00e1c thu\u1eadt to\u00e1n nh\u01b0 <\/span><a title=\"Proof-of-Work (PoW)\" href=\"https:\/\/en.wikipedia.org\/wiki\/Proof_of_work\" target=\"_blank\" rel=\"nofollow noopener\"><b>Proof-of-Work (PoW) <\/b><\/a><span style=\"font-weight: 400;\">hay <\/span><b>Proof-of-Stake (PoS)<\/b><span style=\"font-weight: 400;\"> bu\u1ed9c c\u00e1c n\u00fat ph\u1ea3i \u0111\u1ed3ng \u00fd v\u1ec1 t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a giao d\u1ecbch v\u00e0 tr\u1eadt t\u1ef1 c\u1ee7a c\u00e1c kh\u1ed1i tr\u01b0\u1edbc khi th\u00eam kh\u1ed1i m\u1edbi v\u00e0o chu\u1ed7i.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Bao_mat_theo_tung_loai_Blockchain\"><\/span><b>B\u1ea3o m\u1eadt theo t\u1eebng lo\u1ea1i Blockchain<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c Blockchain \u0111\u1ec1u c\u00f3 c\u00f9ng m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt; n\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i h\u00ecnh v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a m\u1ea1ng l\u01b0\u1edbi. S\u1ef1 kh\u00e1c bi\u1ec7t trong vi\u1ec7c qu\u1ea3n l\u00fd quy\u1ec1n truy c\u1eadp v\u00e0 x\u00e1c th\u1ef1c t\u1ea1o n\u00ean nh\u1eefng y\u00eau c\u1ea7u v\u00e0 th\u00e1ch th\u1ee9c <\/span><b>B\u1ea3o m\u1eadt Blockchain<\/b><span style=\"font-weight: 400;\"> ri\u00eang bi\u1ec7t.<\/span><\/p>\n<figure id=\"attachment_2484\" aria-describedby=\"caption-attachment-2484\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2484 size-full\" title=\"B\u1ea3o m\u1eadt theo t\u1eebng lo\u1ea1i Blockchain\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-3TV.webp\" alt=\"B\u1ea3o m\u1eadt theo t\u1eebng lo\u1ea1i Blockchain\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-3TV.webp 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-3TV-300x200.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-2484\" class=\"wp-caption-text\">B\u1ea3o m\u1eadt theo t\u1eebng lo\u1ea1i Blockchain<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Public Blockchain (Blockchain c\u00f4ng c\u1ed9ng):<\/b><span style=\"font-weight: 400;\"> Lo\u1ea1i h\u00ecnh phi t\u1eadp trung ho\u00e0n to\u00e0n (v\u00ed d\u1ee5: Bitcoin, Ethereum). \u0110\u1ed9 b\u1ea3o m\u1eadt r\u1ea5t cao nh\u1edd v\u00e0o quy m\u00f4 l\u1edbn c\u1ee7a m\u1ea1ng l\u01b0\u1edbi v\u00e0 c\u01a1 ch\u1ebf \u0111\u1ed3ng thu\u1eadn nghi\u00eam ng\u1eb7t.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Private Blockchain (Blockchain ri\u00eang t\u01b0):<\/b><span style=\"font-weight: 400;\"> M\u1ea1ng l\u01b0\u1edbi do m\u1ed9t t\u1ed5 ch\u1ee9c duy nh\u1ea5t qu\u1ea3n l\u00fd. T\u00ednh phi t\u1eadp trung th\u1ea5p h\u01a1n. B\u1ea3o m\u1eadt t\u1eadp trung v\u00e0o vi\u1ec7c qu\u1ea3n l\u00fd quy\u1ec1n truy c\u1eadp v\u00e0 nh\u1eadn d\u1ea1ng c\u1ee7a c\u00e1c th\u00e0nh vi\u00ean \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e9p.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Consortium Blockchain (Blockchain li\u00ean minh):<\/b><span style=\"font-weight: 400;\"> \u0110\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi m\u1ed9t nh\u00f3m c\u00e1c t\u1ed5 ch\u1ee9c \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh. B\u1ea3o m\u1eadt d\u1ef1a v\u00e0o s\u1ef1 tin t\u01b0\u1edfng l\u1eabn nhau gi\u1eefa c\u00e1c th\u00e0nh vi\u00ean li\u00ean minh v\u00e0 c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt l\u1edbp m\u1ea1ng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cac_moi_de_doa_chinh_doi_voi_bao_mat_Blockchain\"><\/span><b>C\u00e1c m\u1ed1i \u0111e d\u1ecda ch\u00ednh \u0111\u1ed1i v\u1edbi b\u1ea3o m\u1eadt Blockchain<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">M\u1eb7c d\u00f9 Blockchain l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 an to\u00e0n, n\u00f3 kh\u00f4ng ho\u00e0n to\u00e0n mi\u1ec5n nhi\u1ec5m v\u1edbi m\u1ecdi m\u1ed1i \u0111e d\u1ecda. H\u1ea7u h\u1ebft c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u00f4ng nh\u1eafm v\u00e0o b\u1ea3n th\u00e2n l\u00f5i c\u00f4ng ngh\u1ec7 m\u1eadt m\u00e3 m\u00e0 th\u01b0\u1eddng khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng trong c\u01a1 ch\u1ebf \u0111\u1ed3ng thu\u1eadn ho\u1eb7c l\u1edbp \u1ee9ng d\u1ee5ng. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i lu\u00f4n c\u1ea3nh gi\u00e1c \u0111\u1ec3 c\u1ee7ng c\u1ed1 <\/span><b>B\u1ea3o m\u1eadt Blockchain<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan_cong_51\"><\/span><b>T\u1ea5n c\u00f4ng 51%<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">T\u1ea5n c\u00f4ng 51% l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda nghi\u00eam tr\u1ecdng, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c Blockchain s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf Proof-of-Work (PoW) ho\u1eb7c Proof-of-Stake (PoS) c\u00f3 quy m\u00f4 nh\u1ecf.<\/span><\/p>\n<figure id=\"attachment_2485\" aria-describedby=\"caption-attachment-2485\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2485 size-full\" title=\"T\u1ea5n c\u00f4ng 51%\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-4.webp\" alt=\"T\u1ea5n c\u00f4ng 51%\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-4.webp 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-4-300x200.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-2485\" class=\"wp-caption-text\">T\u1ea5n c\u00f4ng 51%<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">N\u1ebfu m\u1ed9t th\u1ef1c th\u1ec3 c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t h\u01a1n <\/span><b>50% t\u1ed5ng s\u1ee9c m\u1ea1nh t\u00ednh to\u00e1n (hash rate)<\/b><span style=\"font-weight: 400;\"> c\u1ee7a m\u1ea1ng l\u01b0\u1edbi PoW (ho\u1eb7c h\u01a1n 50% t\u1ed5ng s\u1ed1 token \u0111\u00e3 stake trong PoS), h\u1ecd c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh vi \u0111\u1ed9c h\u1ea1i nh\u01b0 ng\u0103n ch\u1eb7n c\u00e1c giao d\u1ecbch m\u1edbi \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn, l\u00e0m \u0111\u1ea3o ng\u01b0\u1ee3c c\u00e1c giao d\u1ecbch \u0111\u00e3 th\u1ef1c hi\u1ec7n (d\u1eabn \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 chi ti\u00eau k\u00e9p). Vi\u1ec7c ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng l\u1edbn t\u00e0i nguy\u00ean n\u00e0y l\u00e0 r\u00e0o c\u1ea3n kinh t\u1ebf v\u00e0 k\u1ef9 thu\u1eadt r\u1ea5t l\u1edbn \u0111\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng l\u01b0\u1edbi l\u1edbn.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chi_tieu_kep_Double_Spending\"><\/span><b>Chi ti\u00eau k\u00e9p (Double Spending)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Chi ti\u00eau k\u00e9p l\u00e0 h\u00e0nh vi s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t t\u00e0i s\u1ea3n <\/span><b>k\u1ef9 thu\u1eadt s\u1ed1 (token\/coin)<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 th\u1ef1c hi\u1ec7n hai ho\u1eb7c nhi\u1ec1u giao d\u1ecbch kh\u00e1c nhau.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trong m\u00f4i tr\u01b0\u1eddng Blockchain, vi\u1ec7c <\/span><b>b\u1ea3o m\u1eadt ch\u1ed1ng chi ti\u00eau k\u00e9p<\/b><span style=\"font-weight: 400;\"> l\u00e0 nguy\u00ean t\u1eafc thi\u1ebft y\u1ebfu. N\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c giao d\u1ecbch \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo tr\u00ecnh t\u1ef1 th\u1eddi gian v\u00e0 \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 c\u00e1c n\u00fat trong m\u1ea1ng l\u01b0\u1edbi \u0111\u1ed3ng thu\u1eadn. N\u1ebfu k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 \u0111\u1ee7 s\u1ee9c m\u1ea1nh (nh\u01b0 trong t\u1ea5n c\u00f4ng 51%) \u0111\u1ec3 t\u1ea1o ra m\u1ed9t nh\u00e1nh Blockchain ri\u00eang v\u00e0 x\u00e1c nh\u1eadn giao d\u1ecbch g\u1ea5p \u0111\u00f4i tr\u01b0\u1edbc khi m\u1ea1ng l\u01b0\u1edbi ch\u00ednh x\u00e1c nh\u1eadn giao d\u1ecbch g\u1ed1c, h\u1ecd c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n chi ti\u00eau k\u00e9p.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tan_cong_Sybil\"><\/span><b>T\u1ea5n c\u00f4ng Sybil<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">T\u1ea5n c\u00f4ng Sybil x\u1ea3y ra khi m\u1ed9t k\u1ebb t\u1ea5n c\u00f4ng t\u1ea1o ra m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c danh t\u00ednh gi\u1ea3 (n\u00fat gi\u1ea3) \u0111\u1ec3 gi\u00e0nh quy\u1ec1n ki\u1ec3m so\u00e1t m\u1ea1ng l\u01b0\u1edbi v\u00e0 ph\u00e1 v\u1ee1 c\u01a1 ch\u1ebf \u0111\u1ed3ng thu\u1eadn.<\/span><\/p>\n<figure id=\"attachment_2486\" aria-describedby=\"caption-attachment-2486\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2486 size-full\" title=\"T\u1ea5n c\u00f4ng Sybil\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-5.webp\" alt=\"T\u1ea5n c\u00f4ng Sybil\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-5.webp 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-5-300x200.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-2486\" class=\"wp-caption-text\">T\u1ea5n c\u00f4ng Sybil<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">M\u1ee5c ti\u00eau l\u00e0 <\/span><b>l\u00e0m qu\u00e1 t\u1ea3i m\u1ea1ng l\u01b0\u1edbi ho\u1eb7c chi\u1ebfm \u0111o\u1ea1t t\u1ef7 l\u1ec7 l\u1edbn trong c\u00e1c quy tr\u00ecnh b\u1ecf phi\u1ebfu ho\u1eb7c x\u00e1c th\u1ef1c giao d\u1ecbch<\/b><span style=\"font-weight: 400;\">. C\u00e1c Blockchain l\u1edbn, c\u00f4ng khai ch\u1ed1ng l\u1ea1i t\u1ea5n c\u00f4ng Sybil th\u00f4ng qua chi ph\u00ed t\u00e0i nguy\u00ean (nh\u01b0 <\/span><b>PoW y\u00eau c\u1ea7u s\u1ee9c m\u1ea1nh t\u00ednh to\u00e1n, PoS y\u00eau c\u1ea7u t\u00e0i s\u1ea3n th\u1ebf ch\u1ea5p<\/b><span style=\"font-weight: 400;\">) \u0111\u1ec3 t\u1ea1o ra c\u00e1c n\u00fat. C\u00e1c m\u1ea1ng l\u01b0\u1edbi ri\u00eang t\u01b0 ho\u1eb7c m\u1edbi th\u00e0nh l\u1eadp c\u00f3 th\u1ec3 d\u1ec5 b\u1ecb t\u1ed5n th\u01b0\u01a1ng h\u01a1n n\u1ebfu kh\u00f4ng c\u00f3 c\u01a1 ch\u1ebf qu\u1ea3n l\u00fd danh t\u00ednh m\u1ea1nh m\u1ebd.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lo_hong_trong_hop_dong_thong_minh\"><\/span><b>L\u1ed7 h\u1ed5ng trong h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">H\u1ee3p \u0111\u1ed3ng th\u00f4ng minh (Smart Contract) l\u00e0 c\u00e1c \u0111o\u1ea1n m\u00e3 t\u1ef1 th\u1ef1c thi \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean Blockchain. Ch\u00fang l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a c\u00e1c<\/span><b> \u1ee9ng d\u1ee5ng phi t\u1eadp trung (DApps) <\/b><span style=\"font-weight: 400;\">v\u00e0 <\/span><b>t\u00e0i ch\u00ednh phi t\u1eadp trung (DeFi)<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c l\u1ed7 h\u1ed5ng th\u01b0\u1eddng kh\u00f4ng n\u1eb1m \u1edf b\u1ea3n th\u00e2n Blockchain m\u00e0 n\u1eb1m \u1edf l\u1ed7i l\u1eadp tr\u00ecnh trong m\u00e3 ngu\u1ed3n c\u1ee7a h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh. M\u1ed9t l\u1ed7i nh\u1ecf c\u00f3 th\u1ec3 cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng r\u00fat ti\u1ec1n ho\u1eb7c khai th\u00e1c ch\u1ee9c n\u0103ng m\u1ed9t c\u00e1ch kh\u00f4ng ch\u00ednh \u0111\u00e1ng. Do t\u00ednh ch\u1ea5t b\u1ea5t bi\u1ebfn c\u1ee7a Blockchain, m\u1ed9t khi h\u1ee3p \u0111\u1ed3ng th\u00f4ng minh c\u00f3 l\u1ed7 h\u1ed5ng \u0111\u01b0\u1ee3c tri\u1ec3n khai, vi\u1ec7c s\u1eeda ch\u1eefa l\u00e0 r\u1ea5t kh\u00f3 kh\u0103n, khi\u1ebfn ki\u1ec3m to\u00e1n m\u00e3 ngu\u1ed3n (code audit) tr\u1edf th\u00e0nh m\u1ed9t b\u01b0\u1edbc b\u1ea3o m\u1eadt c\u1ef1c k\u1ef3 quan tr\u1ecdng.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ung_dung_bao_mat_Blockchain_trong_doanh_nghiep\"><\/span><b>\u1ee8ng d\u1ee5ng b\u1ea3o m\u1eadt Blockchain trong doanh nghi\u1ec7p<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Kh\u1ea3 n\u0103ng <\/span><b>B\u1ea3o m\u1eadt Blockchain<\/b><span style=\"font-weight: 400;\"> \u0111\u00e3 v\u01b0\u1ee3t ra ngo\u00e0i ti\u1ec1n t\u1ec7 k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 \u0111ang \u0111\u01b0\u1ee3c c\u00e1c doanh nghi\u1ec7p t\u1eadn d\u1ee5ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 b\u1ea3o m\u1eadt d\u1eef li\u1ec7u v\u00e0 ni\u1ec1m tin.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Qu\u1ea3n l\u00fd chu\u1ed7i cung \u1ee9ng (Supply Chain Management):<\/b><span style=\"font-weight: 400;\"> Blockchain cung c\u1ea5p h\u1ed3 s\u01a1 b\u1ea5t bi\u1ebfn v\u1ec1 ngu\u1ed3n g\u1ed1c, di chuy\u1ec3n v\u00e0 quy\u1ec1n s\u1edf h\u1eefu c\u1ee7a s\u1ea3n ph\u1ea9m, ng\u0103n ch\u1eb7n vi\u1ec7c l\u00e0m gi\u1ea3.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ea3o v\u1ec7 d\u1eef li\u1ec7u y t\u1ebf (Healthcare Data Security):<\/b><span style=\"font-weight: 400;\"> D\u1eef li\u1ec7u b\u1ec7nh nh\u00e2n \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a v\u00e0 l\u01b0u tr\u1eef, cho ph\u00e9p b\u1ec7nh nh\u00e2n ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp th\u00f4ng qua kh\u00f3a ri\u00eang t\u01b0.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Nh\u1eadn d\u1ea1ng k\u1ef9 thu\u1eadt s\u1ed1 phi t\u1eadp trung (Decentralized Digital Identity &#8211; DID):<\/b><span style=\"font-weight: 400;\"> Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1edf h\u1eefu v\u00e0 ki\u1ec3m so\u00e1t danh t\u00ednh s\u1ed1 c\u1ee7a m\u00ecnh, gi\u1ea3m thi\u1ec3u r\u1ee7i ro b\u1ecb \u0111\u00e1nh c\u1eafp danh t\u00ednh.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Xu_huong_bao_mat_Blockchain_trong_tuong_lai\"><\/span><b>Xu h\u01b0\u1edbng b\u1ea3o m\u1eadt Blockchain trong t\u01b0\u01a1ng lai<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">L\u0129nh v\u1ef1c <\/span><b>B\u1ea3o m\u1eadt Blockchain<\/b><span style=\"font-weight: 400;\"> li\u00ean t\u1ee5c ph\u00e1t tri\u1ec3n \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi v\u00e0 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u m\u1edf r\u1ed9ng quy m\u00f4. Nh\u1eefng \u0111\u1ed5i m\u1edbi n\u00e0y s\u1ebd c\u1ee7ng c\u1ed1 h\u01a1n n\u1eefa v\u1ecb th\u1ebf c\u1ee7a Blockchain nh\u01b0 m\u1ed9t c\u00f4ng ngh\u1ec7 b\u1ea3o m\u1eadt h\u00e0ng \u0111\u1ea7u.<\/span><\/p>\n<figure id=\"attachment_2487\" aria-describedby=\"caption-attachment-2487\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2487 size-full\" title=\"Xu h\u01b0\u1edbng b\u1ea3o m\u1eadt Blockchain trong t\u01b0\u01a1ng lai\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-6.webp\" alt=\"Xu h\u01b0\u1edbng b\u1ea3o m\u1eadt Blockchain trong t\u01b0\u01a1ng lai\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-6.webp 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2025\/12\/bao-mat-blockchain-6-300x200.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-2487\" class=\"wp-caption-text\">Xu h\u01b0\u1edbng b\u1ea3o m\u1eadt Blockchain trong t\u01b0\u01a1ng lai<\/figcaption><\/figure>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Zero-Knowledge Proofs (ZKP):<\/b><span style=\"font-weight: 400;\"> Cho ph\u00e9p m\u1ed9t b\u00ean ch\u1ee9ng minh tuy\u00ean b\u1ed1 l\u00e0 \u0111\u00fang m\u00e0 kh\u00f4ng c\u1ea7n ti\u1ebft l\u1ed9 b\u1ea5t k\u1ef3 th\u00f4ng tin n\u00e0o ngo\u00e0i b\u1ea3n th\u00e2n tuy\u00ean b\u1ed1 \u0111\u00f3, c\u1ea3i thi\u1ec7n quy\u1ec1n ri\u00eang t\u01b0.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ea3o m\u1eadt H\u1ee3p \u0111\u1ed3ng th\u00f4ng minh n\u00e2ng cao:<\/b><span style=\"font-weight: 400;\"> \u00c1p d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ki\u1ec3m to\u00e1n t\u1ef1 \u0111\u1ed9ng b\u1eb1ng AI v\u00e0 c\u00e1c m\u00f4 h\u00ecnh h\u1ee3p \u0111\u1ed3ng c\u00f3 kh\u1ea3 n\u0103ng n\u00e2ng c\u1ea5p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro l\u1ed7i m\u00e3 ngu\u1ed3n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>B\u1ea3o m\u1eadt H\u1eadu l\u01b0\u1ee3ng t\u1eed (Post-Quantum Cryptography):<\/b><span style=\"font-weight: 400;\"> Nghi\u00ean c\u1ee9u chuy\u1ec3n \u0111\u1ed5i sang c\u00e1c thu\u1eadt to\u00e1n kh\u00e1ng l\u01b0\u1ee3ng t\u1eed \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi m\u1ed1i \u0111e d\u1ecda t\u1eeb m\u00e1y t\u00ednh l\u01b0\u1ee3ng t\u1eed trong t\u01b0\u01a1ng lai.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_bao_mat_Blockchain\"><\/span><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 b\u1ea3o m\u1eadt Blockchain<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_Du_lieu_tren_Blockchain_co_the_bi_thay_doi_khong\"><\/span><b>1. D\u1eef li\u1ec7u tr\u00ean Blockchain c\u00f3 th\u1ec3 b\u1ecb thay \u0111\u1ed5i kh\u00f4ng?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">V\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, d\u1eef li\u1ec7u tr\u00ean Blockchain l\u00e0 <\/span><b>b\u1ea5t bi\u1ebfn<\/b><span style=\"font-weight: 400;\"> (immutable). Vi\u1ec7c thay \u0111\u1ed5i d\u1eef li\u1ec7u sau khi kh\u1ed1i \u0111\u00e3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o chu\u1ed7i l\u00e0 c\u1ef1c k\u1ef3 kh\u00f3 kh\u0103n, g\u1ea7n nh\u01b0 l\u00e0 kh\u00f4ng th\u1ec3 \u0111\u1ed1i v\u1edbi c\u00e1c Blockchain c\u00f4ng c\u1ed9ng l\u1edbn, do y\u00eau c\u1ea7u ph\u1ea3i ki\u1ec3m so\u00e1t ph\u1ea7n l\u1edbn m\u1ea1ng l\u01b0\u1edbi v\u00e0 t\u00ednh to\u00e1n l\u1ea1i to\u00e0n b\u1ed9 chu\u1ed7i.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Lieu_vi_tien_dien_tu_cua_toi_co_an_toan_tren_Blockchain_khong\"><\/span><b>2. Li\u1ec7u v\u00ed ti\u1ec1n \u0111i\u1ec7n t\u1eed c\u1ee7a t\u00f4i c\u00f3 an to\u00e0n tr\u00ean Blockchain kh\u00f4ng?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">V\u00ed ti\u1ec1n \u0111i\u1ec7n t\u1eed t\u1ef1 n\u00f3 kh\u00f4ng n\u1eb1m tr\u00ean Blockchain. B\u1ea3o m\u1eadt v\u00ed ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1ch b\u1ea1n b\u1ea3o v\u1ec7 <\/span><b>kh\u00f3a ri\u00eang t\u01b0 (Private Key)<\/b><span style=\"font-weight: 400;\"> c\u1ee7a m\u00ecnh. N\u1ebfu kh\u00f3a ri\u00eang t\u01b0 b\u1ecb r\u00f2 r\u1ec9, t\u00e0i s\u1ea3n c\u1ee7a b\u1ea1n s\u1ebd g\u1eb7p nguy hi\u1ec3m, kh\u00f4ng ph\u1ea3i do l\u1ed7i c\u1ee7a Blockchain m\u00e0 l\u00e0 do l\u1ed7i b\u1ea3o m\u1eadt c\u00e1 nh\u00e2n.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Blockchain_co_can_cac_bien_phap_bao_mat_truyen_thong_khong\"><\/span><b>3. Blockchain c\u00f3 c\u1ea7n c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt truy\u1ec1n th\u1ed1ng kh\u00f4ng?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">C\u00f3, trong khi l\u1edbp giao th\u1ee9c c\u1ee7a Blockchain t\u1ef1 b\u1ea3o v\u1ec7 b\u1eb1ng m\u1eadt m\u00e3, th\u00ec c\u00e1c <\/span><b>l\u1edbp \u1ee9ng d\u1ee5ng<\/b><span style=\"font-weight: 400;\"> v\u00e0 <\/span><b>l\u1edbp c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng<\/b><span style=\"font-weight: 400;\"> (m\u00e1y ch\u1ee7, v\u00ed, s\u00e0n giao d\u1ecbch) v\u1eabn c\u1ea7n c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt truy\u1ec1n th\u1ed1ng nh\u01b0 t\u01b0\u1eddng l\u1eeda, h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp (IDS) \u0111\u1ec3 b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u00ean ngo\u00e0i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00f4ng ngh\u1ec7 <\/span><b>B\u1ea3o m\u1eadt Blockchain<\/b><span style=\"font-weight: 400;\"> kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t t\u00ednh n\u0103ng m\u00e0 l\u00e0 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i, l\u00e0 l\u1eddi h\u1ee9a v\u1ec1 m\u1ed9t t\u01b0\u01a1ng lai s\u1ed1 h\u00f3a phi t\u1eadp trung v\u00e0 an to\u00e0n h\u01a1n. Khi c\u00f4ng ngh\u1ec7 n\u00e0y ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, vi\u1ec7c gi\u1eef v\u1eefng c\u00e1c nguy\u00ean t\u1eafc b\u1ea3o m\u1eadt v\u00e0 li\u00ean t\u1ee5c \u0111\u1ed5i m\u1edbi s\u1ebd l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh s\u1ef1 th\u00e0nh c\u00f4ng v\u00e0 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i c\u1ee7a n\u00f3 trong m\u1ecdi l\u0129nh v\u1ef1c.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong k\u1ef7 nguy\u00ean s\u1ed1 h\u00f3a, c\u00f4ng ngh\u1ec7 Blockchain \u0111\u00e3 n\u1ed5i l\u00ean nh\u01b0 m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng, kh\u00f4ng ch\u1ec9 trong l\u0129nh v\u1ef1c t\u00e0i ch\u00ednh m\u00e0 c\u00f2n m\u1edf r\u1ed9ng sang nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c. Tuy nhi\u00ean, s\u1ee9c m\u1ea1nh c\u1ed1t l\u00f5i l\u00e0m n\u00ean gi\u00e1 tr\u1ecb c\u1ee7a Blockchain ch\u00ednh l\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o m\u1eadt v\u01b0\u1ee3t tr\u1ed9i. Vi\u1ec7c hi\u1ec3u<\/p>\n","protected":false},"author":1,"featured_media":2490,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts\/2479"}],"collection":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/comments?post=2479"}],"version-history":[{"count":3,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts\/2479\/revisions"}],"predecessor-version":[{"id":2500,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts\/2479\/revisions\/2500"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/media\/2490"}],"wp:attachment":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/media?parent=2479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/categories?post=2479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/tags?post=2479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}