{"id":9485,"date":"2022-09-29T10:15:00","date_gmt":"2022-09-29T03:15:00","guid":{"rendered":"https:\/\/w2.vacif.com\/?p=919"},"modified":"2024-06-24T03:51:30","modified_gmt":"2024-06-24T03:51:30","slug":"cac-hinh-thuc-tan-cong-pho-bien-qua-email","status":"publish","type":"post","link":"https:\/\/vacif.com\/en\/cac-hinh-thuc-tan-cong-pho-bien-qua-email\/","title":{"rendered":"C\u00e1c h\u00ecnh th\u1ee9c t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn qua email"},"content":{"rendered":"\n

1.C\u00e1c ki\u1ec3u t\u1ea5n c\u00f4ng email ph\u1ed5 bi\u1ebfn<\/strong><\/h1>\n\n\n\n

M\u1ed9t s\u1ed1 ki\u1ec3u t\u1ea5n c\u00f4ng email ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n

Fraud:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o d\u1ef1a tr\u00ean email c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau, t\u1eeb c\u00e1c tr\u00f2 l\u1eeba \u0111\u1ea3o thu ph\u00ed tr\u01b0\u1edbc c\u1ed5 \u0111i\u1ec3n nh\u1eafm v\u00e0o nh\u1eefng ng\u01b0\u1eddi h\u00e0ng ng\u00e0y \u0111\u1ebfn c\u00e1c th\u00f4ng b\u00e1o th\u1ecfa hi\u1ec7p email doanh nghi\u1ec7p (BEC) nh\u1eb1m m\u1ee5c \u0111\u00edch l\u1eeba k\u1ebf to\u00e1n doanh nghi\u1ec7p l\u1edbn. c\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n ti\u1ec1n v\u00e0o c\u00e1c t\u00e0i kho\u1ea3n b\u1ea5t h\u1ee3p ph\u00e1p. Th\u00f4ng th\u01b0\u1eddng, k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd s\u1eed d\u1ee5ng gi\u1ea3 m\u1ea1o t\u00ean mi\u1ec1n \u0111\u1ec3 l\u00e0m cho y\u00eau c\u1ea7u v\u1ec1 ti\u1ec1n gi\u1ed1ng nh\u01b0 n\u00f3 \u0111\u1ebfn t\u1eeb m\u1ed9t ngu\u1ed3n h\u1ee3p ph\u00e1p.<\/p>\n\n\n\n

Phising:<\/strong> M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o c\u1ed1 g\u1eafng khi\u1ebfn n\u1ea1n nh\u00e2n cung c\u1ea5p th\u00f4ng tin nh\u1ea1y c\u1ea3m cho k\u1ebb t\u1ea5n c\u00f4ng. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o qua email c\u00f3 th\u1ec3 h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn m\u1ed9t trang web gi\u1ea3 m\u1ea1o \u0111\u1ec3 thu th\u1eadp th\u00f4ng tin x\u00e1c th\u1ef1c ho\u1eb7c ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 \u00e1p l\u1ef1c ng\u01b0\u1eddi d\u00f9ng g\u1eedi th\u00f4ng tin \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 email \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u00ed m\u1eadt b\u1edfi k\u1ebb t\u1ea5n c\u00f4ng. Gi\u1ea3 m\u1ea1o t\u00ean mi\u1ec1n c\u0169ng ph\u1ed5 bi\u1ebfn trong c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng nh\u01b0 th\u1ebf n\u00e0y.<\/p>\n\n\n\n

Ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i:<\/strong> C\u00e1c lo\u1ea1i ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c g\u1eedi qua email bao g\u1ed3m ph\u1ea7n m\u1ec1m gi\u00e1n \u0111i\u1ec7p, ph\u1ea7n m\u1ec1m h\u00f9 d\u1ecda, ph\u1ea7n m\u1ec1m qu\u1ea3ng c\u00e1o v\u00e0 ransomware, trong s\u1ed1 nh\u1eefng ph\u1ea7n m\u1ec1m kh\u00e1c. Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 g\u1eedi ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i qua email theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau. M\u1ed9t trong nh\u1eefng \u0111i\u1ec1u ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 bao g\u1ed3m t\u1ec7p \u0111\u00ednh k\u00e8m email c\u00f3 ch\u1ee9a m\u00e3 \u0111\u1ed9c h\u1ea1i.<\/p>\n\n\n\n

Account takeover:<\/strong> Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng chi\u1ebfm \u0111o\u1ea1t h\u1ed9p th\u01b0 \u0111\u1ebfn email t\u1eeb nh\u1eefng ng\u01b0\u1eddi d\u00f9ng h\u1ee3p ph\u00e1p cho nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 theo d\u00f5i th\u01b0 c\u1ee7a h\u1ecd, \u0111\u00e1nh c\u1eafp th\u00f4ng tin ho\u1eb7c s\u1eed d\u1ee5ng \u0111\u1ecba ch\u1ec9 email h\u1ee3p ph\u00e1p \u0111\u1ec3 chuy\u1ec3n ti\u1ebfp c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i v\u00e0 th\u01b0 r\u00e1c t\u1edbi danh b\u1ea1 c\u1ee7a h\u1ecd.<\/p>\n\n\n\n

Email interception:<\/strong> Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 ch\u1eb7n c\u00e1c email \u0111\u1ec3 l\u1ea5y c\u1eafp th\u00f4ng tin ch\u1ee9a trong ch\u00fang ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u1ef1c tuy\u1ebfn trong \u0111\u00f3 ch\u00fang m\u1ea1o danh c\u1ea3 hai b\u00ean c\u1ee7a cu\u1ed9c tr\u00f2 chuy\u1ec7n v\u1edbi nhau. Ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c n\u00e0y l\u00e0 gi\u00e1m s\u00e1t c\u00e1c g\u00f3i d\u1eef li\u1ec7u m\u1ea1ng tr\u00ean m\u1ea1ng c\u1ee5c b\u1ed9 kh\u00f4ng d\u00e2y (LAN), v\u00ec vi\u1ec7c ch\u1eb7n m\u1ed9t email khi n\u00f3 truy\u1ec1n qua Internet l\u00e0 v\u00f4 c\u00f9ng kh\u00f3 kh\u0103n.<\/p>\n\n\n\n

2.Ki\u1ec3u t\u1ea5n c\u00f4ng email phising<\/strong><\/h1>\n\n\n\n

L\u1eeba \u0111\u1ea3o l\u00e0 m\u1ed9t n\u1ed7 l\u1ef1c \u0111\u1ec3 \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m, th\u01b0\u1eddng \u1edf d\u1ea1ng t\u00ean ng\u01b0\u1eddi d\u00f9ng, m\u1eadt kh\u1ea9u ho\u1eb7c th\u00f4ng tin t\u00e0i kho\u1ea3n quan tr\u1ecdng kh\u00e1c. K\u1ebb l\u1eeba \u0111\u1ea3o s\u1eed d\u1ee5ng ch\u00ednh th\u00f4ng tin b\u1ecb \u0111\u00e1nh c\u1eafp, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ec3 chi\u1ebfm \u0111o\u1ea1t t\u00e0i kho\u1ea3n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1eb1ng m\u1eadt kh\u1ea9u c\u1ee7a h\u1ecd ho\u1eb7c b\u00e1n th\u00f4ng tin b\u1ecb \u0111\u00e1nh c\u1eafp.<\/p>\n\n\n\n

Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o ng\u1ee5y trang th\u00e0nh m\u1ed9t ngu\u1ed3n c\u00f3 uy t\u00edn. V\u1edbi m\u1ed9t y\u00eau c\u1ea7u h\u1ea5p d\u1eabn ho\u1eb7c c\u00f3 v\u1ebb kh\u1ea9n c\u1ea5p, k\u1ebb t\u1ea5n c\u00f4ng d\u1ee5 n\u1ea1n nh\u00e2n cung c\u1ea5p th\u00f4ng tin, gi\u1ed1ng nh\u01b0 m\u1ed9t ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u1ed3i khi c\u00e2u c\u00e1.<\/p>\n\n\n\n

L\u1eeba \u0111\u1ea3o th\u01b0\u1eddng di\u1ec5n ra qua email. Nh\u1eefng k\u1ebb l\u1eeba \u0111\u1ea3o c\u1ed1 g\u1eafng l\u1eeba m\u1ecdi ng\u01b0\u1eddi g\u1eedi th\u00f4ng tin qua email tr\u1ef1c ti\u1ebfp ho\u1eb7c li\u00ean k\u1ebft \u0111\u1ebfn trang web m\u00e0 h\u1ecd ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 tr\u00f4ng h\u1ee3p ph\u00e1p (v\u00ed d\u1ee5: trang \u0111\u0103ng nh\u1eadp gi\u1ea3 m\u1ea1o n\u01a1i ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u1eadt kh\u1ea9u c\u1ee7a h\u1ecd).<\/p>\n\n\n\n

C\u00f3 m\u1ed9t s\u1ed1 ki\u1ec3u l\u1eeba \u0111\u1ea3o:<\/p>\n\n\n\n

Spear phishing<\/strong> \u0111\u01b0\u1ee3c nh\u1eafm m\u1ee5c ti\u00eau cao v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e1 nh\u00e2n h\u00f3a \u0111\u1ec3 thuy\u1ebft ph\u1ee5c h\u01a1n.<\/p>\n\n\n\n

Whaling<\/strong> nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o nh\u1eefng ng\u01b0\u1eddi quan tr\u1ecdng ho\u1eb7c c\u00f3 \u1ea3nh h\u01b0\u1edfng trong m\u1ed9t t\u1ed5 ch\u1ee9c, ch\u1eb3ng h\u1ea1n nh\u01b0 gi\u00e1m \u0111\u1ed1c \u0111i\u1ec1u h\u00e0nh. \u0110\u00e2y l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda ch\u00ednh trong b\u1ea3o m\u1eadt email doanh nghi\u1ec7p.<\/p>\n\n\n\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng phishing qua email<\/strong> bao g\u1ed3m vishing (l\u1eeba \u0111\u1ea3o qua cu\u1ed9c g\u1ecdi \u0111i\u1ec7n tho\u1ea1i), smishing (l\u1eeba \u0111\u1ea3o qua tin nh\u1eafn v\u0103n b\u1ea3n) v\u00e0 l\u1eeba \u0111\u1ea3o qua m\u1ea1ng x\u00e3 h\u1ed9i.<\/p>\n\n\n\n

Chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o m\u1eadt email c\u00f3 th\u1ec3 bao g\u1ed3m m\u1ed9t s\u1ed1 c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o. C\u00e1c gi\u1ea3i ph\u00e1p b\u1ea3o m\u1eadt email c\u00f3 th\u1ec3 l\u1ecdc ra c\u00e1c email t\u1eeb c\u00e1c \u0111\u1ecba ch\u1ec9 IP x\u1ea5u \u0111\u00e3 bi\u1ebft. H\u1ecd c\u00f3 th\u1ec3 ch\u1eb7n ho\u1eb7c x\u00f3a c\u00e1c li\u00ean k\u1ebft \u0111\u01b0\u1ee3c nh\u00fang trong email \u0111\u1ec3 ng\u0103n ng\u01b0\u1eddi d\u00f9ng \u0111i\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn c\u00e1c trang web l\u1eeba \u0111\u1ea3o. Ho\u1eb7c, h\u1ecd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng l\u1ecdc DNS \u0111\u1ec3 ch\u1eb7n c\u00e1c trang web n\u00e0y. C\u00e1c gi\u1ea3i ph\u00e1p ng\u0103n ch\u1eb7n m\u1ea5t m\u00e1t d\u1eef li\u1ec7u (DLP) c\u0169ng c\u00f3 th\u1ec3 ch\u1eb7n ho\u1eb7c s\u1eafp x\u1ebfp l\u1ea1i c\u00e1c th\u01b0 g\u1eedi \u0111i c\u00f3 ch\u1ee9a th\u00f4ng tin nh\u1ea1y c\u1ea3m. Cu\u1ed1i c\u00f9ng, nh\u00e2n vi\u00ean c\u1ee7a t\u1ed5 ch\u1ee9c ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o v\u1ec1 c\u00e1ch nh\u1eadn ra email l\u1eeba \u0111\u1ea3o.<\/p>\n\n\n\n

3.Ki\u1ec3u t\u1ea5n c\u00f4ng email b\u1eb1ng t\u1ec7p \u0111\u00ednh k\u00e8m<\/strong><\/h1>\n\n\n\n

T\u1ec7p \u0111\u00ednh k\u00e8m email l\u00e0 m\u1ed9t t\u00ednh n\u0103ng c\u00f3 gi\u00e1 tr\u1ecb, nh\u01b0ng nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng s\u1eed d\u1ee5ng kh\u1ea3 n\u0103ng email n\u00e0y \u0111\u1ec3 g\u1eedi n\u1ed9i dung \u0111\u1ed9c h\u1ea1i \u0111\u1ebfn c\u00e1c m\u1ee5c ti\u00eau c\u1ee7a ch\u00fang, bao g\u1ed3m c\u1ea3 ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i.<\/p>\n\n\n\n

M\u1ed9t c\u00e1ch h\u1ecd c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n l\u00e0 \u0111\u00ednh k\u00e8m ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i d\u01b0\u1edbi d\u1ea1ng t\u1ec7p .exe, sau \u0111\u00f3 l\u1eeba ng\u01b0\u1eddi nh\u1eadn m\u1edf t\u1ec7p \u0111\u00ednh k\u00e8m. M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn ph\u1ed5 bi\u1ebfn h\u01a1n nhi\u1ec1u l\u00e0 che gi\u1ea5u m\u00e3 \u0111\u1ed9c h\u1ea1i trong m\u1ed9t t\u00e0i li\u1ec7u c\u00f3 v\u1ebb nh\u01b0 v\u00f4 t\u1ed9i, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ec7p PDF ho\u1eb7c t\u1ec7p Word. C\u1ea3 hai lo\u1ea1i t\u1ec7p n\u00e0y \u0111\u1ec1u h\u1ed7 tr\u1ee3 bao g\u1ed3m m\u00e3 – ch\u1eb3ng h\u1ea1n nh\u01b0 macro – m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 h\u00e0nh \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i tr\u00ean m\u00e1y t\u00ednh c\u1ee7a ng\u01b0\u1eddi nh\u1eadn, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1ea3i xu\u1ed1ng v\u00e0 m\u1edf ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i.<\/p>\n\n\n\n

Nhi\u1ec1u v\u1ee5 l\u00e2y nhi\u1ec5m ransomware trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y b\u1eaft \u0111\u1ea7u b\u1eb1ng t\u1ec7p \u0111\u00ednh k\u00e8m email. V\u00ed d\u1ee5:<\/p>\n\n\n\n

Ryuk ransomware th\u01b0\u1eddng x\u00e2m nh\u1eadp v\u00e0o m\u1ea1ng th\u00f4ng qua nhi\u1ec5m tr\u00f9ng TrickBot ho\u1eb7c Emotet, c\u1ea3 hai \u0111\u1ec1u l\u00e2y lan qua t\u1ec7p \u0111\u00ednh k\u00e8m email<\/p>\n\n\n\n

Maze ransomware s\u1eed d\u1ee5ng t\u1ec7p \u0111\u00ednh k\u00e8m email \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ed7 \u0111\u1ee9ng trong m\u1ea1ng c\u1ee7a n\u1ea1n nh\u00e2n<\/p>\n\n\n\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng Petya ransomware c\u0169ng th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t t\u1ec7p \u0111\u00ednh k\u00e8m email<\/p>\n\n\n\n

M\u1ed9t ph\u1ea7n c\u1ee7a b\u1ea3o m\u1eadt email li\u00ean quan \u0111\u1ebfn vi\u1ec7c ch\u1eb7n ho\u1eb7c v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c t\u1ec7p \u0111\u00ednh k\u00e8m email \u0111\u1ed9c h\u1ea1i n\u00e0y; \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c qu\u00e9t t\u1ea5t c\u1ea3 c\u00e1c email c\u00f3 ph\u1ea7n m\u1ec1m ch\u1ed1ng ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u00e3 \u0111\u1ed9c h\u1ea1i. Ngo\u00e0i ra, ng\u01b0\u1eddi d\u00f9ng n\u00ean \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o \u0111\u1ec3 b\u1ecf qua c\u00e1c t\u1ec7p \u0111\u00ednh k\u00e8m email kh\u00f4ng mong mu\u1ed1n ho\u1eb7c kh\u00f4ng gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c. \u0110\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng email d\u1ef1a tr\u00ean web, vi\u1ec7c c\u00f4 l\u1eadp tr\u00ecnh duy\u1ec7t c\u0169ng c\u00f3 th\u1ec3 gi\u00fap v\u00f4 hi\u1ec7u h\u00f3a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng n\u00e0y, v\u00ec t\u1ec7p \u0111\u00ednh k\u00e8m \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c t\u1ea3i xu\u1ed1ng trong h\u1ed9p c\u00e1t t\u00e1ch bi\u1ec7t v\u1edbi thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

4.Ki\u1ec3u t\u1ea5n c\u00f4ng b\u1eb1ng spam<\/strong><\/h1>\n\n\n\n

Th\u01b0 r\u00e1c l\u00e0 m\u1ed9t thu\u1eadt ng\u1eef \u0111\u1ec3 ch\u1ec9 c\u00e1c th\u01b0 email kh\u00f4ng mong mu\u1ed1n ho\u1eb7c kh\u00f4ng ph\u00f9 h\u1ee3p, \u0111\u01b0\u1ee3c g\u1eedi m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 cho ph\u00e9p c\u1ee7a ng\u01b0\u1eddi nh\u1eadn. H\u1ea7u nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 email \u0111\u1ec1u cung c\u1ea5p m\u1ed9t s\u1ed1 m\u1ee9c \u0111\u1ed9 l\u1ecdc th\u01b0 r\u00e1c. Nh\u01b0ng kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi, m\u1ed9t s\u1ed1 tin nh\u1eafn r\u00e1c v\u1eabn \u0111\u1ebfn \u0111\u01b0\u1ee3c h\u1ed9p th\u01b0 \u0111\u1ebfn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

Nh\u1eefng k\u1ebb g\u1eedi th\u01b0 r\u00e1c c\u00f3 \u0111\u01b0\u1ee3c “danh ti\u1ebfng ng\u01b0\u1eddi g\u1eedi email” * x\u1ea5u theo th\u1eddi gian, d\u1eabn \u0111\u1ebfn ng\u00e0y c\u00e0ng nhi\u1ec1u th\u01b0 c\u1ee7a h\u1ecd b\u1ecb \u0111\u00e1nh d\u1ea5u l\u00e0 th\u01b0 r\u00e1c. V\u00ec l\u00fd do n\u00e0y, h\u1ecd th\u01b0\u1eddng c\u00f3 \u0111\u1ed9ng c\u01a1 chi\u1ebfm \u0111o\u1ea1t h\u1ed9p th\u01b0 \u0111\u1ebfn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, \u0111\u00e1nh c\u1eafp kh\u00f4ng gian \u0111\u1ecba ch\u1ec9 IP ho\u1eb7c gi\u1ea3 m\u1ea1o t\u00ean mi\u1ec1n \u0111\u1ec3 g\u1eedi th\u01b0 r\u00e1c m\u00e0 kh\u00f4ng b\u1ecb ph\u00e1t hi\u1ec7n l\u00e0 th\u01b0 r\u00e1c.<\/p>\n\n\n\n

C\u00e1c c\u00e1 nh\u00e2n v\u00e0 t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ec3 c\u1eaft gi\u1ea3m th\u01b0 r\u00e1c m\u00e0 h\u1ecd nh\u1eadn \u0111\u01b0\u1ee3c. H\u1ecd c\u00f3 th\u1ec3 gi\u1ea3m ho\u1eb7c lo\u1ea1i b\u1ecf danh s\u00e1ch c\u00f4ng khai c\u00e1c \u0111\u1ecba ch\u1ec9 email c\u1ee7a h\u1ecd. H\u1ecd c\u00f3 th\u1ec3 tri\u1ec3n khai b\u1ed9 l\u1ecdc th\u01b0 r\u00e1c c\u1ee7a b\u00ean th\u1ee9 ba tr\u00ean b\u1ed9 l\u1ecdc do d\u1ecbch v\u1ee5 email c\u1ee7a h\u1ecd cung c\u1ea5p. V\u00e0 h\u1ecd c\u00f3 th\u1ec3 nh\u1ea5t qu\u00e1n v\u1ec1 vi\u1ec7c \u0111\u00e1nh d\u1ea5u email spam l\u00e0 th\u01b0 r\u00e1c, \u0111\u1ec3 \u0111\u00e0o t\u1ea1o t\u1ed1t h\u01a1n kh\u1ea3 n\u0103ng l\u1ecdc m\u00e0 h\u1ecd c\u00f3.<\/p>\n\n\n\n

* N\u1ebfu ph\u1ea7n l\u1edbn email c\u1ee7a ng\u01b0\u1eddi g\u1eedi kh\u00f4ng \u0111\u01b0\u1ee3c m\u1edf ho\u1eb7c b\u1ecb ng\u01b0\u1eddi nh\u1eadn \u0111\u00e1nh d\u1ea5u l\u00e0 spam ho\u1eb7c n\u1ebfu th\u01b0 c\u1ee7a ng\u01b0\u1eddi g\u1eedi b\u1ecb tr\u1ea3 l\u1ea1i qu\u00e1 nhi\u1ec1u, ISP v\u00e0 d\u1ecbch v\u1ee5 email s\u1ebd h\u1ea1 c\u1ea5p danh ti\u1ebfng ng\u01b0\u1eddi g\u1eedi email c\u1ee7a h\u1ecd.<\/p>\n","protected":false},"excerpt":{"rendered":"

1.C\u00e1c ki\u1ec3u t\u1ea5n c\u00f4ng email ph\u1ed5 bi\u1ebfn M\u1ed9t s\u1ed1 ki\u1ec3u t\u1ea5n c\u00f4ng email ph\u1ed5 bi\u1ebfn bao g\u1ed3m: Fraud: C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o d\u1ef1a tr\u00ean email c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u h\u00ecnh th\u1ee9c kh\u00e1c nhau, t\u1eeb c\u00e1c tr\u00f2 l\u1eeba \u0111\u1ea3o thu ph\u00ed tr\u01b0\u1edbc c\u1ed5 \u0111i\u1ec3n nh\u1eafm v\u00e0o nh\u1eefng ng\u01b0\u1eddi h\u00e0ng ng\u00e0y \u0111\u1ebfn c\u00e1c th\u00f4ng b\u00e1o […]<\/p>\n","protected":false},"author":2,"featured_media":921,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"off","ocean_gallery_id":[],"footnotes":""},"categories":[47,80,17],"tags":[50],"class_list":["post-9485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-email-security","category-huong-dan-tai-lieu","category-bao-mat","tag-cac-hinh-thuc-tan-cong-pho-bien-qua-email","entry","has-media"],"_links":{"self":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts\/9485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/comments?post=9485"}],"version-history":[{"count":1,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts\/9485\/revisions"}],"predecessor-version":[{"id":10072,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/posts\/9485\/revisions\/10072"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/media\/921"}],"wp:attachment":[{"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/media?parent=9485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/categories?post=9485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vacif.com\/en\/wp-json\/wp\/v2\/tags?post=9485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}