{"id":476316,"date":"2023-08-09T07:28:31","date_gmt":"2023-08-09T07:28:31","guid":{"rendered":""},"modified":"2023-09-05T11:12:27","modified_gmt":"2023-09-05T11:12:27","slug":"cold-boot-attack","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/cold-boot-attack\/","title":{"rendered":"T\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i"},"content":{"rendered":"<p>T\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i l\u00e0 m\u1ed9t ki\u1ec3u khai th\u00e1c an ninh m\u1ea1ng nh\u1eafm v\u00e0o d\u1eef li\u1ec7u trong B\u1ed9 nh\u1edb truy c\u1eadp ng\u1eabu nhi\u00ean (RAM) ho\u1eb7c b\u1ed9 nh\u1edb \u0111\u1ec7m tr\u00ean \u1ed5 \u0111\u0129a c\u1ee7a m\u00e1y t\u00ednh, sau khi h\u1ec7 th\u1ed1ng b\u1ecb t\u1eaft ho\u1eb7c \u0111\u1eb7t l\u1ea1i kh\u00f4ng \u0111\u00fang c\u00e1ch (\u201ckh\u1edfi \u0111\u1ed9ng ngu\u1ed9i\u201d). B\u1eb1ng c\u00e1ch \u0111\u00f3, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o th\u00f4ng tin nh\u1ea1y c\u1ea3m, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u00f3a m\u00e3 h\u00f3a, m\u1eadt kh\u1ea9u v\u00e0 c\u00e1c d\u1ea1ng d\u1eef li\u1ec7u kh\u00e1c th\u01b0\u1eddng b\u1ecb m\u1ea5t trong qu\u00e1 tr\u00ecnh t\u1eaft ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111\u00fang c\u00e1ch.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<p>C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c kh\u00e1i ni\u1ec7m h\u00f3a trong m\u1ed9t b\u00e0i nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n v\u00e0o th\u00e1ng 2 n\u0103m 2008 b\u1edfi m\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u t\u1eeb \u0110\u1ea1i h\u1ecdc Princeton. Nghi\u00ean c\u1ee9u n\u00e0y l\u00e0 m\u1ed9t kh\u00e1m ph\u00e1 mang t\u00ednh \u0111\u1ed9t ph\u00e1 trong th\u1ebf gi\u1edbi an ninh m\u1ea1ng v\u00ec n\u00f3 b\u1ed9c l\u1ed9 m\u1ed9t l\u1ed7 h\u1ed5ng ti\u1ec1m \u1ea9n m\u1edbi c\u1ee7a m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i \u2013 kh\u1ea3 n\u0103ng d\u1eef li\u1ec7u v\u1eabn t\u1ed3n t\u1ea1i trong RAM ngay c\u1ea3 khi m\u1ea5t \u0111i\u1ec7n. Ti\u1ebft l\u1ed9 n\u00e0y cho th\u1ea5y r\u00f5 r\u1eb1ng ngay c\u1ea3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a t\u1ed1t c\u0169ng c\u00f3 th\u1ec3 b\u1ecb t\u1ed5n th\u01b0\u01a1ng n\u1ebfu k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 quy\u1ec1n truy c\u1eadp v\u1eadt l\u00fd v\u00e0o m\u00e1y.<\/p>\n<h2>Kh\u00e1m ph\u00e1 chuy\u00ean s\u00e2u v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<p>Ti\u1ec1n \u0111\u1ec1 trung t\u00e2m c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i l\u00e0 \u0111\u1eb7c t\u00ednh l\u01b0u gi\u1eef d\u1eef li\u1ec7u, trong \u0111\u00f3 th\u00f4ng tin v\u1eabn \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef sau khi b\u1ecb t\u1eaft ngu\u1ed3n. RAM, th\u01b0\u1eddng m\u1ea5t n\u1ed9i dung khi ngu\u1ed3n \u0111i\u1ec7n b\u1ecb c\u1eaft, th\u1ef1c t\u1ebf v\u1eabn l\u01b0u gi\u1eef d\u1eef li\u1ec7u trong m\u1ed9t th\u1eddi gian ng\u1eafn. Trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i, k\u1ebb t\u1ea5n c\u00f4ng nhanh ch\u00f3ng l\u00e0m m\u00e1t c\u00e1c chip RAM (do \u0111\u00f3 c\u00f3 thu\u1eadt ng\u1eef &#039;kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i&#039;) \u0111\u1ec3 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh m\u1ea5t th\u00f4ng tin, sau \u0111\u00f3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y t\u00ednh v\u00e0o h\u1ec7 th\u1ed1ng m\u00e0 ch\u00fang ki\u1ec3m so\u00e1t v\u00e0 chuy\u1ec3n n\u1ed9i dung RAM v\u00e0o m\u1ed9t t\u1ec7p.<\/p>\n<p>B\u1eb1ng c\u00e1ch ki\u1ec3m tra t\u1ec7p n\u00e0y, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 tr\u00edch xu\u1ea5t d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u00f3a m\u1eadt m\u00e3, sau \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c b\u1ea3o m\u1eadt kh\u00e1c. Tuy nhi\u00ean, m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng th\u00e0nh c\u00f4ng \u0111\u00f2i h\u1ecfi c\u1ea3 quy\u1ec1n truy c\u1eadp v\u1eadt l\u00fd v\u00e0o m\u00e1y m\u1ee5c ti\u00eau c\u0169ng nh\u01b0 ki\u1ebfn th\u1ee9c v\u00e0 thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<p>M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i th\u01b0\u1eddng bao g\u1ed3m c\u00e1c b\u01b0\u1edbc sau:<\/p>\n<ol>\n<li>\n<p><strong>Kh\u1edfi t\u1ea1o<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp v\u1eadt l\u00fd v\u00e0o h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau.<\/p>\n<\/li>\n<li>\n<p><strong>Qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng th\u1ef1c hi\u1ec7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i c\u1ee9ng, \u0111\u00f4i khi l\u00e0m m\u00e1t RAM \u0111\u1ec3 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y d\u1eef li\u1ec7u.<\/p>\n<\/li>\n<li>\n<p><strong>Ghi \u0111\u00e8 h\u1ec7 th\u1ed1ng<\/strong>: H\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng l\u1ea1i b\u1eb1ng h\u1ec7 \u0111i\u1ec1u h\u00e0nh t\u00f9y ch\u1ec9nh nh\u1ecf tr\u00ean thi\u1ebft b\u1ecb b\u00ean ngo\u00e0i.<\/p>\n<\/li>\n<li>\n<p><strong>K\u1ebft xu\u1ea5t b\u1ed9 nh\u1edb<\/strong>: N\u1ed9i dung c\u1ee7a RAM \u0111\u01b0\u1ee3c chuy\u1ec3n sang thi\u1ebft b\u1ecb l\u01b0u tr\u1eef ngo\u00e0i.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n t\u00edch<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng s\u00e0ng l\u1ecdc d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy xu\u1ea5t \u0111\u1ec3 t\u00ecm th\u00f4ng tin nh\u1ea1y c\u1ea3m, nh\u01b0 kh\u00f3a m\u00e3 h\u00f3a v\u00e0 th\u00f4ng tin \u0111\u0103ng nh\u1eadp.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Y\u00eau c\u1ea7u truy c\u1eadp v\u1eadt l\u00fd<\/strong>: C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i y\u00eau c\u1ea7u k\u1ebb t\u1ea5n c\u00f4ng ph\u1ea3i c\u00f3 quy\u1ec1n truy c\u1eadp v\u1eadt l\u00fd v\u00e0o h\u1ec7 th\u1ed1ng \u0111\u00edch.<\/li>\n<li><strong>D\u1eef li\u1ec7u c\u00f2n s\u00f3t l\u1ea1i<\/strong>: C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y t\u1eadn d\u1ee5ng \u0111\u1eb7c t\u00ednh l\u01b0u tr\u1eef d\u1eef li\u1ec7u trong RAM.<\/li>\n<li><strong>Truy c\u1eadp b\u1ed9 nh\u1edb tr\u1ef1c ti\u1ebfp<\/strong>: Ch\u00fang b\u1ecf qua c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh b\u1eb1ng c\u00e1ch truy c\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ed9 nh\u1edb.<\/li>\n<li><strong>Ph\u00e1 v\u1ee1 m\u00e3 h\u00f3a<\/strong>: Ch\u00fang c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m suy y\u1ebfu qu\u00e1 tr\u00ecnh m\u00e3 h\u00f3a \u1ed5 \u0111\u0129a b\u1eb1ng c\u00e1ch l\u1ea5y c\u00e1c kh\u00f3a m\u00e3 h\u00f3a t\u1eeb RAM.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea5n c\u00f4ng c\u01a1 b\u1ea3n<\/td>\n<td>Li\u00ean quan \u0111\u1ebfn vi\u1ec7c l\u00e0m m\u00e1t nhanh ch\u00f3ng v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i ngay l\u1eadp t\u1ee9c h\u1ec7 th\u1ed1ng do k\u1ebb t\u1ea5n c\u00f4ng ki\u1ec3m so\u00e1t.<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea5n c\u00f4ng n\u00e2ng cao<\/td>\n<td>Li\u00ean quan \u0111\u1ebfn vi\u1ec7c th\u00e1o r\u1eddi m\u00e1y t\u00ednh v\u00e0 chuy\u1ec3n RAM sang m\u1ed9t m\u00e1y kh\u00e1c do k\u1ebb t\u1ea5n c\u00f4ng \u0111i\u1ec1u khi\u1ec3n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1eed d\u1ee5ng c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p \u0111\u1ed1i ph\u00f3 ti\u1ec1m n\u0103ng<\/h2>\n<p>Do b\u1ea3n ch\u1ea5t c\u1ee7a ch\u00fang, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch x\u1ea5u, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, ph\u00e1 ho\u1ea1i c\u00e1c giao th\u1ee9c b\u1ea3o m\u1eadt v\u00e0 ph\u00e1 v\u1ee1 h\u1ec7 th\u1ed1ng m\u00e3 h\u00f3a.<\/p>\n<p>C\u00e1c bi\u1ec7n ph\u00e1p \u0111\u1ed1i ph\u00f3 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng nh\u01b0 v\u1eady c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>T\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb<\/strong>: B\u1ea5t c\u1ee9 khi n\u00e0o kh\u00f4ng s\u1eed d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng an to\u00e0n, n\u00ean t\u1eaft ngu\u1ed3n thi\u1ebft b\u1ecb.<\/li>\n<li><strong>Bi\u00ean t\u1eadp d\u1eef li\u1ec7u<\/strong>: Gi\u1ea3m l\u01b0\u1ee3ng d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong RAM.<\/li>\n<li><strong>Bi\u1ec7n ph\u00e1p \u0111\u1ed1i ph\u00f3 d\u1ef1a tr\u00ean ph\u1ea7n c\u1ee9ng<\/strong>: Thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng \u0111\u1ec3 x\u00f3a c\u00e1c key kh\u1ecfi RAM ngay khi kh\u00f4ng c\u00f2n c\u1ea7n thi\u1ebft.<\/li>\n<\/ul>\n<h2>So s\u00e1nh v\u1edbi c\u00e1c m\u1ed1i \u0111e d\u1ecda an ninh m\u1ea1ng t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>M\u1ed1i \u0111e d\u1ecda<\/th>\n<th>Y\u00eau c\u1ea7u quy\u1ec1n truy c\u1eadp v\u1eadt l\u00fd<\/th>\n<th>M\u1ee5c ti\u00eau RAM<\/th>\n<th>B\u1ecf qua m\u00e3 h\u00f3a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>T\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110\u00fang<\/td>\n<\/tr>\n<tr>\n<td>ghi nh\u1eadt k\u00fd b\u00e0n ph\u00edm<\/td>\n<td>C\u00f3 ti\u1ec1m n\u0103ng<\/td>\n<td>KH\u00d4NG<\/td>\n<td>KH\u00d4NG<\/td>\n<\/tr>\n<tr>\n<td>L\u1eeba \u0111\u1ea3o<\/td>\n<td>KH\u00d4NG<\/td>\n<td>KH\u00d4NG<\/td>\n<td>KH\u00d4NG<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Vi\u1ec5n c\u1ea3nh t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<p>Trong khi c\u00e1c bi\u1ec7n ph\u00e1p an ninh hi\u1ec7n \u0111\u1ea1i ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n th\u00ec c\u00e1c k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng c\u0169ng v\u1eady. C\u00e1c c\u00f4ng ngh\u1ec7 RAM trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi \u0111\u1eb7c t\u00ednh ph\u00e2n h\u1ee7y d\u1eef li\u1ec7u nhanh ch\u00f3ng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng nh\u01b0 v\u1eady. Ngo\u00e0i ra, vi\u1ec7c \u00e1p d\u1ee5ng ng\u00e0y c\u00e0ng nhi\u1ec1u c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt d\u1ef1a tr\u00ean ph\u1ea7n c\u1ee9ng, ch\u1eb3ng h\u1ea1n nh\u01b0 chip M\u00f4-\u0111un n\u1ec1n t\u1ea3ng \u0111\u00e1ng tin c\u1eady (TPM), c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i.<\/p>\n<h2>M\u1ed1i li\u00ean h\u1ec7 gi\u1eefa m\u00e1y ch\u1ee7 proxy v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 gi\u00e1n ti\u1ebfp gi\u00fap gi\u1ea3m thi\u1ec3u r\u1ee7i ro c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i. Ch\u00fang \u1ea9n \u0111\u1ecba ch\u1ec9 IP th\u1ef1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, khi\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng g\u1eb7p kh\u00f3 kh\u0103n h\u01a1n khi nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o c\u00e1c thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i. Tuy nhi\u00ean, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i nh\u1edb r\u1eb1ng m\u00e1y ch\u1ee7 proxy ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n v\u00e0 kh\u00f4ng th\u1ec3 tr\u1ef1c ti\u1ebfp ng\u0103n ch\u1eb7n cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i n\u1ebfu k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 quy\u1ec1n truy c\u1eadp v\u1eadt l\u00fd v\u00e0o thi\u1ebft b\u1ecb.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i, h\u00e3y tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ul>\n<li>Gi\u1ea5y g\u1ed1c: <a href=\"https:\/\/citp.princeton.edu\/research\/memory\/\" target=\"_new\" rel=\"noopener nofollow\">Ch\u00fang ta \u0111\u1eebng nh\u1edb: C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u1edfi \u0111\u1ed9ng ngu\u1ed9i v\u00e0o kh\u00f3a m\u00e3 h\u00f3a<\/a><\/li>\n<li>H\u01b0\u1edbng d\u1eabn chi ti\u1ebft t\u1eeb Vi\u1ec7n Ti\u00eau chu\u1ea9n v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ed1c gia Hoa K\u1ef3 (NIST): <a href=\"https:\/\/nvlpubs.nist.gov\/nistpubs\/SpecialPublications\/NIST.SP.800-111.pdf\" target=\"_new\" rel=\"noopener nofollow\">H\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00f4ng ngh\u1ec7 m\u00e3 h\u00f3a l\u01b0u tr\u1eef cho thi\u1ebft b\u1ecb ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i<\/a><\/li>\n<\/ul>\n<p>H\u00e3y nh\u1edb r\u1eb1ng, hi\u1ec3u r\u00f5 c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh m\u1ea1ng hi\u1ec7u qu\u1ea3 v\u00e0 \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 b\u1ea1n ph\u1ea3i li\u00ean t\u1ee5c c\u1eadp nh\u1eadt ki\u1ebfn th\u1ee9c khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n.<\/p>","protected":false},"featured_media":476317,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476316","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Cold Boot Attack: A Comprehensive Analysis<\/mark>","faq_items":[{"question":"What is a cold boot attack?","answer":"<p>A cold boot attack is a cybersecurity exploit that targets data in a computer's Random Access Memory (RAM) or disk caches, after a system has been improperly shut down or reset. Through this, attackers can gain unauthorized access to sensitive information such as encryption keys and passwords.<\/p>"},{"question":"Who first discovered the concept of a cold boot attack?","answer":"<p>Cold boot attacks were first conceptualized in a research paper published in February 2008 by a group of researchers from Princeton University.<\/p>"},{"question":"How does a cold boot attack work?","answer":"<p>In a cold boot attack, the attacker rapidly cools the RAM chips to slow down the loss of information, reboots the computer to a system they control, and dumps the RAM contents to a file. This file is then examined to extract sensitive data, such as cryptographic keys.<\/p>"},{"question":"What are the key features of a cold boot attack?","answer":"<p>Key features of a cold boot attack include the requirement of physical access to the target system, exploitation of data remanence in RAM, direct memory access bypassing operating system security measures, and the circumvention of encryption.<\/p>"},{"question":"What types of cold boot attacks exist?","answer":"<p>Two main types of cold boot attacks exist: Basic and Enhanced. A basic attack involves rapid cooling and immediate rebooting to a system controlled by the attacker. An enhanced attack involves disassembling the computer and transferring the RAM to a different machine controlled by the attacker.<\/p>"},{"question":"How can cold boot attacks be prevented?","answer":"<p>Preventive measures against cold boot attacks may include powering off devices when not in use, reducing the amount of sensitive data stored in the RAM, and designing hardware to erase keys from RAM as soon as it is no longer needed.<\/p>"},{"question":"How are proxy servers related to cold boot attacks?","answer":"<p>Proxy servers can indirectly help mitigate the risks of cold boot attacks by hiding the real IP address of a user, making it more challenging for attackers to target specific devices for these attacks.<\/p>"},{"question":"Where can I find more information about cold boot attacks?","answer":"<p>More detailed information about cold boot attacks can be found in the original research paper titled <a href=\"https:\/\/citp.princeton.edu\/research\/memory\/\" target=\"_new\">Lest We Remember: Cold Boot Attacks on Encryption Keys<\/a> and the United States National Institute of Standards and Technology (NIST) <a href=\"https:\/\/nvlpubs.nist.gov\/nistpubs\/SpecialPublications\/NIST.SP.800-111.pdf\" target=\"_new\">Guide to Storage Encryption Technologies for End User Devices<\/a>.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476316","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476316\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476317"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}