{"id":1050,"date":"2026-04-23T20:04:27","date_gmt":"2026-04-23T13:04:27","guid":{"rendered":"https:\/\/vncybers.vn\/apple-va-lo-hong-ios-26-4-2-sau-vu-fbi-phuc-hoi-tin-nhan-signal-da-xoa\/"},"modified":"2026-04-24T03:11:41","modified_gmt":"2026-04-23T20:11:41","slug":"apple-va-lo-hong-ios-26-4-2-sau-vu-fbi-phuc-hoi-tin-nhan-signal-da-xoa","status":"publish","type":"post","link":"https:\/\/vncybers.vn\/en\/apple-va-lo-hong-ios-26-4-2-sau-vu-fbi-phuc-hoi-tin-nhan-signal-da-xoa\/","title":{"rendered":"Apple v\u00e1 l\u1ed7 h\u1ed5ng iOS 26.4.2 sau v\u1ee5 FBI ph\u1ee5c h\u1ed3i tin nh\u1eafn Signal \u0111\u00e3 x\u00f3a"},"content":{"rendered":"
\"Apple<\/figure>\n\n\n\n

Apple v\u1eeba tung b\u1ea3n c\u1eadp nh\u1eadt kh\u1ea9n c\u1ea5p iOS 26.4.2 v\u00e0 iOS 18.7.8 nh\u1eb1m v\u00e1 l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt CVE-2026-28950, v\u1ed1n \u0111\u00e3 b\u1ecb FBI khai th\u00e1c \u0111\u1ec3 ph\u1ee5c h\u1ed3i n\u1ed9i dung tin nh\u1eafn Signal t\u1eeb thi\u1ebft b\u1ecb c\u1ee7a m\u1ed9t nghi ph\u1ea1m, ngay c\u1ea3 sau khi \u1ee9ng d\u1ee5ng \u0111\u00e3 b\u1ecb x\u00f3a ho\u00e0n to\u00e0n.<\/p>\n\n\n\n

L\u1ed7 h\u1ed5ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n

CVE-2026-28950 t\u1ed3n t\u1ea1i trong h\u1ec7 th\u1ed1ng Notification Services c\u1ee7a iOS. Thay v\u00ec x\u00f3a v\u0129nh vi\u1ec5n, c\u00e1c th\u00f4ng b\u00e1o \u0111\u00e3 b\u1ecb \u0111\u00e1nh d\u1ea5u x\u00f3a v\u1eabn ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u1ed9i b\u1ed9 c\u1ee7a thi\u1ebft b\u1ecb. V\u1edbi nh\u1eefng thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t hi\u1ec3n th\u1ecb n\u1ed9i dung tin nh\u1eafn Signal tr\u00ean m\u00e0n h\u00ecnh kh\u00f3a, h\u1ec7 th\u1ed1ng s\u1ebd ghi to\u00e0n b\u1ed9 n\u1ed9i dung \u0111\u00f3 v\u00e0o database th\u00f4ng b\u00e1o, n\u01a1i d\u1eef li\u1ec7u t\u1ed3n t\u1ea1i l\u00e2u h\u01a1n so v\u1edbi k\u1ef3 v\u1ecdng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 l\u1ed7 h\u1ed5ng kh\u00f4ng xu\u1ea5t ph\u00e1t t\u1eeb Signal m\u00e0 ho\u00e0n to\u00e0n n\u1eb1m trong c\u01a1 ch\u1ebf l\u01b0u tr\u1eef th\u00f4ng b\u00e1o n\u1ed9i b\u1ed9 c\u1ee7a iOS. Apple x\u1eed l\u00fd v\u1ea5n \u0111\u1ec1 b\u1eb1ng c\u00e1ch c\u1ea3i ti\u1ebfn quy tr\u00ecnh bi\u00ean t\u1eadp d\u1eef li\u1ec7u (data redaction) v\u00e0 kh\u00f4ng ti\u1ebft l\u1ed9 th\u00eam chi ti\u1ebft k\u1ef9 thu\u1eadt.<\/p>\n\n\n\n

V\u1ee5 FBI v\u00e0 c\u00e2u chuy\u1ec7n \u0111\u1eb1ng sau b\u1ea3n v\u00e1<\/h2>\n\n\n\n

V\u1ee5 vi\u1ec7c b\u1ecb ph\u01a1i b\u00e0y qua l\u1eddi khai t\u1ea1i t\u00f2a \u00e1n. FBI \u0111\u00e3 ti\u1ebfp c\u1eadn c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u00f4ng b\u00e1o n\u1ed9i b\u1ed9 tr\u00ean iPhone c\u1ee7a m\u1ed9t nghi ph\u1ea1m v\u00e0 thu th\u1eadp \u0111\u01b0\u1ee3c n\u1ed9i dung tin nh\u1eafn Signal, d\u00f9 \u1ee9ng d\u1ee5ng \u0111\u00e3 b\u1ecb g\u1ee1 c\u00e0i \u0111\u1eb7t v\u00e0 tin nh\u1eafn \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t ch\u1ebf \u0111\u1ed9 t\u1ef1 x\u00f3a. \u0110i\u1ec7n tho\u1ea1i \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t hi\u1ec3n th\u1ecb n\u1ed9i dung Signal \u1edf m\u00e0n h\u00ecnh kh\u00f3a, khi\u1ebfn m\u1ecdi tin nh\u1eafn \u0111\u1ebfn \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi v\u00e0o h\u1ec7 th\u1ed1ng log.<\/p>\n\n\n\n

Signal sau \u0111\u00f3 x\u00e1c nh\u1eadn CVE-2026-28950 ch\u00ednh l\u00e0 l\u1ed7 h\u1ed5ng c\u01a1 quan n\u00e0y \u0111\u00e3 khai th\u00e1c. “Ch\u00fang t\u00f4i r\u1ea5t vui v\u00ec Apple \u0111\u00e3 h\u00e0nh \u0111\u1ed9ng nhanh ch\u00f3ng. \u0110\u1ec3 b\u1ea3o v\u1ec7 quy\u1ec1n giao ti\u1ebfp ri\u00eang t\u01b0 c\u01a1 b\u1ea3n c\u1ee7a con ng\u01b0\u1eddi c\u1ea7n c\u1ea3 m\u1ed9t h\u1ec7 sinh th\u00e1i c\u00f9ng h\u1ee3p t\u00e1c,” \u0111\u1ea1i di\u1ec7n Signal tuy\u00ean b\u1ed1. Apple cho bi\u1ebft \u0111\u00e3 x\u1eed l\u00fd qua c\u1ea3i ti\u1ebfn bi\u00ean t\u1eadp d\u1eef li\u1ec7u nh\u01b0ng kh\u00f4ng x\u00e1c nh\u1eadn c\u00f3 hay kh\u00f4ng c\u00f3 h\u00e0nh vi khai th\u00e1c tr\u00ean th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

B\u1ea1n c\u1ea7n l\u00e0m g\u00ec ngay b\u00e2y gi\u1edd?<\/h2>\n\n\n\n

Ng\u01b0\u1eddi d\u00f9ng iPhone v\u00e0 iPad n\u00ean c\u1eadp nh\u1eadt ngay l\u00ean iOS 26.4.2 ho\u1eb7c iOS 18.7.8 (d\u00e0nh cho thi\u1ebft b\u1ecb \u0111\u1eddi c\u0169). Signal cho bi\u1ebft kh\u00f4ng c\u1ea7n th\u1ef1c hi\u1ec7n th\u00eam thao t\u00e1c n\u00e0o sau khi c\u00e0i b\u1ea3n v\u00e1: t\u1ea5t c\u1ea3 th\u00f4ng b\u00e1o b\u1ecb l\u01b0u ngo\u00e0i \u00fd mu\u1ed1n s\u1ebd t\u1ef1 \u0111\u1ed9ng b\u1ecb x\u00f3a.<\/p>\n\n\n\n

\u0110\u1ec3 t\u0103ng c\u01b0\u1eddng b\u1ea3o v\u1ec7 th\u00eam m\u1ed9t l\u1edbp, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 v\u00e0o Signal, ch\u1ecdn Settings (C\u00e0i \u0111\u1eb7t), v\u00e0o Notifications (Th\u00f4ng b\u00e1o), r\u1ed3i trong m\u1ee5c Notification content ch\u1ecdn “Name Only” (Ch\u1ec9 t\u00ean ng\u01b0\u1eddi g\u1eedi) ho\u1eb7c “No Name or Content” (Kh\u00f4ng t\u00ean, kh\u00f4ng n\u1ed9i dung). C\u00e0i \u0111\u1eb7t n\u00e0y \u0111\u1ea3m b\u1ea3o n\u1ed9i dung tin nh\u1eafn kh\u00f4ng bao gi\u1edd xu\u1ea5t hi\u1ec7n tr\u00ean m\u00e0n h\u00ecnh kh\u00f3a v\u00e0 c\u0169ng kh\u00f4ng b\u1ecb ghi v\u00e0o h\u1ec7 th\u1ed1ng th\u00f4ng b\u00e1o c\u1ee7a iOS.<\/p>\n\n\n\n

 <\/p>\n\n\n\n

VNCyberS<\/strong> t\u1ed5ng h\u1ee3p t\u1eeb: Help Net Security<\/a>, MacRumors<\/a><\/em><\/p>","protected":false},"excerpt":{"rendered":"

Apple v\u1eeba ph\u00e1t h\u00e0nh iOS 26.4.2 v\u00e0 iOS 18.7.8 \u0111\u1ec3 v\u00e1 CVE-2026-28950, m\u1ed9t l\u1ed7i trong Notification Services khi\u1ebfn iPhone l\u01b0u n\u1ed9i dung th\u00f4ng b\u00e1o \u0111\u00e3 x\u00f3a, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho FBI ph\u1ee5c h\u1ed3i tin nh\u1eafn Signal ngay c\u1ea3 sau khi \u1ee9ng d\u1ee5ng \u0111\u00e3 b\u1ecb g\u1ee1 c\u00e0i \u0111\u1eb7t.<\/p>","protected":false},"author":2,"featured_media":1049,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[95,94,34,97,96],"class_list":["post-1050","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","tag-apple","tag-ios","tag-lo-hong-bao-mat","tag-quyen-rieng-tu","tag-signal"],"_links":{"self":[{"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/posts\/1050","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/comments?post=1050"}],"version-history":[{"count":1,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/posts\/1050\/revisions"}],"predecessor-version":[{"id":1091,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/posts\/1050\/revisions\/1091"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/media\/1049"}],"wp:attachment":[{"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/media?parent=1050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/categories?post=1050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vncybers.vn\/en\/wp-json\/wp\/v2\/tags?post=1050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}