{"id":34126,"date":"2019-10-31T21:56:32","date_gmt":"2019-10-31T18:56:32","guid":{"rendered":"https:\/\/prohoster.info\/blog\/amd-nakanune-zapuska-zen-2-zayavila-o-bezopasnosti-i-neuyazvimosti-svoih-tsp-k-novym-atakam\/"},"modified":"2019-10-31T21:56:32","modified_gmt":"2019-10-31T18:56:32","slug":"amd-nakanune-zapuska-zen-2-zayavila-o-bezopasnosti-i-neuyazvimosti-svoih-tsp-k-novym-atakam","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/amd-nakanune-zapuska-zen-2-zayavila-o-bezopasnosti-i-neuyazvimosti-svoih-tsp-k-novym-atakam","title":{"rendered":"A AMD, antes do lan\u00e7amento do Zen 2, declarou a seguran\u00e7a e invulnerabilidade de seus processadores a novos ataques","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

J\u00e1 se passou mais de um ano desde a descoberta do Spectre e Meltdown, e o mercado de processadores vem enfrentando uma agita\u00e7\u00e3o devido \u00e0 descoberta de novas vulnerabilidades relacionadas \u00e0 execu\u00e7\u00e3o especulativa. Os chips mais afetados foram incluindo<\/a><\/noindex> o \u00faltimo<\/a><\/noindex> ZombieLoad<\/a><\/noindex>, os chips Intel. Claro, a AMD n\u00e3o perdeu a oportunidade de aproveitar isso, destacando a seguran\u00e7a de seus CPUs.<\/p>\n

\"A<\/p>\n

Sobre p\u00e1gina<\/noindex>, dedicada a vulnerabilidades semelhantes ao Spectre, a empresa anunciou orgulhosamente: «Na AMD, desenvolvemos nossos produtos e servi\u00e7os levando em conta os requisitos de seguran\u00e7a. Com base em uma an\u00e1lise interna e discuss\u00f5es com pesquisadores de seguran\u00e7a, acreditamos que nossos produtos n\u00e3o est\u00e3o sujeitos a ataques Fallout, RIDL<\/a><\/noindex> ou ZombieLoad<\/a><\/noindex> devido \u00e0 presen\u00e7a de verifica\u00e7\u00f5es de seguran\u00e7a em nossa arquitetura. N\u00e3o conseguimos reproduzir essas vulnerabilidades nos produtos AMD e n\u00e3o temos dados de que algu\u00e9m mais tenha conseguido». Foi relatado que os CPUs AMD s\u00e3o invulner\u00e1veis a mais um ataque MDS<\/a><\/noindex> \u2014 Store-to-Leak Forwarding<\/a><\/noindex>.<\/p>\n

Com a descoberta de novas vulnerabilidades e a necessidade de fabricantes de implementar patches adequados, os processadores AMD podem se tornar mais eficientes do que as solu\u00e7\u00f5es concorrentes, de acordo com uma recente an\u00e1lise independente pesquisa<\/a><\/noindex>, realizado pelo site Phoronix, a aplica\u00e7\u00e3o de todo o conjunto de corre\u00e7\u00f5es para o conjunto identificado de vulnerabilidades de processadores relacionadas a execu\u00e7\u00f5es especulativas resulta em uma redu\u00e7\u00e3o de desempenho dos CPUs Intel em m\u00e9dia de 16% (com Hyper-Threading desativado \u2014 at\u00e9 25%). No caso dos processadores AMD Zen+, o desempenho sob as mesmas condi\u00e7\u00f5es cai apenas 3%.<\/p>\n

<\/center>
\n\"A<\/p>\n

Pior ainda: a Apple e o Google recomendam<\/a><\/noindex> para os usu\u00e1rios da Intel desativar completamente o Hyper-Threading, o que pode reduzir o desempenho \u00e0s vezes em at\u00e9 40\u201350% (dependendo da tarefa). A pr\u00f3pria Intel n\u00e3o recomenda fazer isso<\/a><\/noindex> na maioria das situa\u00e7\u00f5es, mas o problema pode ser especialmente cr\u00edtico para esta\u00e7\u00f5es de trabalho, servidores e outras \u00e1reas sens\u00edveis ao desempenho e seguran\u00e7a. No caso dos chips da AMD, a desativa\u00e7\u00e3o da tecnologia semelhante chamada Simultaneous Multi-Threading n\u00e3o \u00e9 necess\u00e1ria. Al\u00e9m disso, a avalanche de not\u00edcias sobre vulnerabilidades, incluindo informa\u00e7\u00f5es sobre tentativas da Intel de esconder informa\u00e7\u00f5es<\/a><\/noindex> do p\u00fablico, certamente impacta a imagem da empresa.<\/p>\n

Estas not\u00edcias chegam em um momento especialmente dif\u00edcil para a Intel: a AMD est\u00e1 prestes a lan\u00e7ar uma fam\u00edlia de processadores modernos de 7 nan\u00f4metros com a arquitetura Zen 2 para tarefas de desktop e servidor. Enquanto isso, a Intel ainda usa uma tecnologia de 14 nm muito antiga (do ponto de vista do desenvolvimento do processo) e n\u00e3o consegue iniciar a produ\u00e7\u00e3o em massa de chips de 10 nm. Tudo isso favorece a AMD, que certamente continuar\u00e1 a aumentar sua participa\u00e7\u00e3o no mercado.<\/p>\n

\"A<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
Fonte: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412\u043e\u0442 \u0443\u0436\u0435 \u0431\u043e\u043b\u044c\u0448\u0435 \u0433\u043e\u0434\u0430 \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f Spectre \u0438 Meltdown \u0440\u044b\u043d\u043e\u043a \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 \u043b\u0438\u0445\u043e\u0440\u0430\u0434\u0438\u0442 \u043e\u0442 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0432\u0441\u0451 \u043d\u043e\u0432\u044b\u0445 \u0438 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441\u043e \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u044b\u043c\u0438 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f\u043c\u0438. \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u043d\u044b\u043c\u0438 \u0438\u043c, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u044e\u044e ZombieLoad, \u043e\u043a\u0430\u0437\u0430\u043b\u0438\u0441\u044c \u0447\u0438\u043f\u044b Intel. \u041a\u043e\u043d\u0435\u0447\u043d\u043e, AMD \u043d\u0435 \u043f\u0440\u0435\u043c\u0438\u043d\u0443\u043b\u0430 \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u044d\u0442\u0438\u043c, \u0434\u0435\u043b\u0430\u044f \u0430\u043a\u0446\u0435\u043d\u0442 \u043d\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0441\u0432\u043e\u0438\u0445 \u0426\u041f. \u041d\u0430 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0435, \u043f\u043e\u0441\u0432\u044f\u0449\u0451\u043d\u043d\u043e\u0439 Spectre-\u043f\u043e\u0434\u043e\u0431\u043d\u044b\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u043c, \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f \u0433\u043e\u0440\u0434\u043e \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430: «\u041c\u044b \u0432 AMD […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25751,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-34126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A AMD, na v\u00e9spera do lan\u00e7amento do Zen 2, afirmou a seguran\u00e7a e a imunidade de seus processadores a novos ataques | ProHoster","description":"J\u00e1 se passou mais de um ano desde a descoberta de Spectre e Meltdown, e o mercado de processadores est\u00e1 agitado com a identifica\u00e7\u00e3o de novas vulnerabilidades relacionadas a c\u00e1lculos especulativos.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/amd-nakanune-zapuska-zen-2-zayavila-o-bezopasnosti-i-neuyazvimosti-svoih-tsp-k-novym-atakam","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47AMD \u043d\u0430\u043a\u0430\u043d\u0443\u043d\u0435 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 Zen 2 \u0437\u0430\u044f\u0432\u0438\u043b\u0430 \u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438 \u043d\u0435\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u0432\u043e\u0438\u0445 \u0426\u041f \u043a \u043d\u043e\u0432\u044b\u043c \u0430\u0442\u0430\u043a\u0430\u043c | ProHoster","og:description":"\u0412\u043e\u0442 \u0443\u0436\u0435 \u0431\u043e\u043b\u044c\u0448\u0435 \u0433\u043e\u0434\u0430 \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f Spectre \u0438 Meltdown \u0440\u044b\u043d\u043e\u043a \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 \u043b\u0438\u0445\u043e\u0440\u0430\u0434\u0438\u0442 \u043e\u0442 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0432\u0441\u0451 \u043d\u043e\u0432\u044b\u0445 \u0438 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441\u043e \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u044b\u043c\u0438 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