{"id":33343,"date":"2019-10-31T21:52:06","date_gmt":"2019-10-31T18:52:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-chrome-poyavitsya-zashhita-ot-peredachi-storonnih-cookie-i-skrytoj-identifikatsii\/"},"modified":"2019-10-31T21:52:06","modified_gmt":"2019-10-31T18:52:06","slug":"v-chrome-poyavitsya-zashhita-ot-peredachi-storonnih-cookie-i-skrytoj-identifikatsii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-chrome-poyavitsya-zashhita-ot-peredachi-storonnih-cookie-i-skrytoj-identifikatsii","title":{"rendered":"V Chrome se objev\u00ed ochrana proti p\u0159ed\u00e1v\u00e1n\u00ed t\u0159et\u00edch stran Cookie a skryt\u00e9 identifikaci","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spole\u010dnost Google p\u0159edstavila<\/a><\/noindex> n\u00e1sleduj\u00edc\u00ed zm\u011bny v Chrome, kter\u00e9 maj\u00ed za c\u00edl zv\u00fd\u0161it ochranu soukrom\u00ed. Prvn\u00ed \u010d\u00e1st zm\u011bn se t\u00fdk\u00e1 zpracov\u00e1n\u00ed Cookie a podpory atributu SameSite. Od verze Chrome 76, o\u010dek\u00e1van\u00e9 v \u010dervenci, aktivov\u00e1n<\/a><\/noindex> vlajka «same-site-by-default-cookies», kter\u00e1 v p\u0159\u00edpad\u011b absence atributu SameSite v hlavi\u010dce Set-Cookie bude ve v\u00fdchoz\u00edm nastaven\u00ed nastavovat hodnotu «SameSite=Lax», co\u017e omezuje odes\u00edl\u00e1n\u00ed Cookie pro insertace z extern\u00edch str\u00e1nek (ale str\u00e1nky si mohou toto omezen\u00ed zru\u0161it, pokud p\u0159i nastavov\u00e1n\u00ed Cookie explicitn\u011b nastav\u00ed hodnotu SameSite=None).<\/p>\n

Atribut SameSite<\/a><\/noindex> umo\u017e\u0148uje ur\u010dit situace, kdy je povoleno p\u0159ed\u00e1n\u00ed Cookie p\u0159i \u017e\u00e1dosti z extern\u00ed str\u00e1nky. V sou\u010dasnosti prohl\u00ed\u017ee\u010d p\u0159ed\u00e1v\u00e1 Cookie na jakoukoli \u017e\u00e1dost na str\u00e1nku, pro kterou jsou nastaveny Cookie, i kdy\u017e je str\u00e1nka p\u016fvodn\u011b otev\u0159ena z jin\u00e9 str\u00e1nky, a p\u0159\u00edstup je realizov\u00e1n nep\u0159\u00edmo prost\u0159ednictv\u00edm na\u010dten\u00ed obr\u00e1zku nebo s pou\u017eit\u00edm iframe. Reklamn\u00ed s\u00edt\u011b vyu\u017e\u00edvaj\u00ed tuto vlastnost k sledov\u00e1n\u00ed pohybu u\u017eivatele mezi str\u00e1nkami, a
\n\u00fato\u010dn\u00edci k prov\u00e1d\u011bn\u00ed CSRF \u00fatok\u016f<\/a><\/noindex> (p\u0159i otev\u0159en\u00ed c\u00edlov\u00e9ho zdroje pod kontrolou \u00fato\u010dn\u00edka se skryt\u011b ode\u0161le \u017e\u00e1dost na jinou str\u00e1nku, na kter\u00e9 je aktu\u00e1ln\u00ed u\u017eivatel autentizov\u00e1n, a prohl\u00ed\u017ee\u010d u\u017eivatele nastav\u00ed pro tuto \u017e\u00e1dost relace Cookie). Na druh\u00e9 stran\u011b mo\u017enost odes\u00edl\u00e1n\u00ed Cookie na extern\u00ed str\u00e1nky se pou\u017e\u00edv\u00e1 pro vkl\u00e1d\u00e1n\u00ed widget\u016f do str\u00e1nek, nap\u0159\u00edklad pro integraci s YouTube nebo Facebookem.<\/p>\n

Pomoc\u00ed atributu SameSit lze \u0159\u00eddit chov\u00e1n\u00ed p\u0159i nastavov\u00e1n\u00ed Cookie a povolit odes\u00edl\u00e1n\u00ed Cookie pouze v odpov\u011bdi na po\u017eadavky, kter\u00e9 byly iniciov\u00e1ny z webu, odkud byly tyto Cookie p\u016fvodn\u011b z\u00edsk\u00e1ny. SameSite m\u016f\u017ee p\u0159ij\u00edmat t\u0159i hodnoty «Strict», «Lax» a «None». V re\u017eimu ‘Strict’ se Cookie neodes\u00edlaj\u00ed pro jak\u00e9koli meziregion\u00e1ln\u00ed po\u017eadavky, v\u010detn\u011b v\u0161ech p\u0159\u00edchoz\u00edch odkaz\u016f z extern\u00edch str\u00e1nek. V re\u017eimu ‘Lax’ plat\u00ed m\u00edrn\u011bj\u0161\u00ed omezen\u00ed a p\u0159enos Cookie je blokov\u00e1n pouze pro meziregion\u00e1ln\u00ed subdotazy, jako jsou po\u017eadavky na obr\u00e1zky nebo na\u010d\u00edt\u00e1n\u00ed obsahu p\u0159es iframe. Rozd\u00edl mezi «Strict» a «Lax» spo\u010d\u00edv\u00e1 v blokaci Cookie p\u0159i kliknut\u00ed na odkaz.<\/p>\n

Mezi dal\u0161\u00edmi nadch\u00e1zej\u00edc\u00edmi zm\u011bnami se pl\u00e1nuje zaveden\u00ed p\u0159\u00edsn\u00e9ho omezen\u00ed, kter\u00e9 zakazuje zpracov\u00e1n\u00ed ciz\u00edch Cookie pro po\u017eadavky bez HTTPS (s atributem SameSite=None mohou b\u00fdt Cookie nastavov\u00e1ny pouze v re\u017eimu Secure). Krom\u011b toho se pl\u00e1nuje pr\u00e1ce na ochran\u011b proti zneu\u017eit\u00ed skryt\u00e9 identifikace («browser fingerprinting»), v\u010detn\u011b metod generov\u00e1n\u00ed identifik\u00e1tor\u016f na z\u00e1klad\u011b nep\u0159\u00edm\u00fdch \u00fadaj\u016f, jako jsou rozli\u0161en\u00ed obrazovky<\/a><\/noindex>, seznam podporovan\u00fdch MIME typ\u016f, specifick\u00e9 parametry v hlavi\u010dk\u00e1ch (HTTP\/2<\/a><\/noindex> a HTTPS<\/a><\/noindex>), anal\u00fdza nainstalovan\u00fdch plugin\u016f a p\u00edsem<\/a><\/noindex>, dostupnost ur\u010dit\u00e9ho Web API specifick\u00e9ho pro grafick\u00e9 karty vlastnosti<\/a><\/noindex> vykreslov\u00e1n\u00ed pomoc\u00ed WebGL a Canvas, manipulace<\/a><\/noindex> s CSS, anal\u00fdza charakteristik pr\u00e1ce s my\u0161\u00ed<\/a><\/noindex> a kl\u00e1vesnic\u00ed<\/a><\/noindex>.<\/p>\n

Krom\u011b toho bude v Chrome p\u0159id\u00e1na<\/a><\/noindex> ochrany p\u0159ed zneu\u017eit\u00edm souvisej\u00edc\u00edm s obt\u00ed\u017eemi p\u0159i n\u00e1vratu na p\u016fvodn\u00ed str\u00e1nku po p\u0159echodu na jin\u00fd web. Hovo\u0159\u00edme o praxi zahlcov\u00e1n\u00ed historie p\u0159echod\u016f s\u00e9ri\u00ed automatick\u00fdch p\u0159esm\u011brov\u00e1n\u00ed nebo um\u011bl\u00fdm p\u0159id\u00e1v\u00e1n\u00edm fiktivn\u00edch z\u00e1pis\u016f do historie prohl\u00ed\u017een\u00ed (p\u0159es pushState), v d\u016fsledku \u010deho\u017e u\u017eivatel nem\u016f\u017ee vyu\u017e\u00edt tla\u010d\u00edtko «Back» pro n\u00e1vrat na p\u016fvodn\u00ed str\u00e1nku po n\u00e1hodn\u00e9m p\u0159echodu nebo nucen\u00e9m p\u0159esm\u011brov\u00e1n\u00ed na web podvodn\u00edk\u016f nebo zlovoln\u00fdch str\u00e1nek. Pro ochranu p\u0159ed podobn\u00fdmi manipulacemi Chrome v obslu\u017en\u00e9 rutin\u011b tla\u010d\u00edtka Back p\u0159esko\u010d\u00ed z\u00e1pisy souvisej\u00edc\u00ed s automatick\u00fdmi p\u0159esm\u011brov\u00e1n\u00edmi a manipulacemi s histori\u00ed n\u00e1v\u0161t\u011bv, ponech\u00e1vaj\u00edc\u00ed pouze str\u00e1nky, kter\u00e9 byly otev\u0159eny na z\u00e1klad\u011b jasn\u00fdch akc\u00ed u\u017eivatele.<\/p>\n

<\/a><\/noindex><\/p>\n

Zdroj: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0433\u0440\u044f\u0434\u0443\u0449\u0438\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Chrome, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u044b\u0435 \u043d\u0430 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u041f\u0435\u0440\u0432\u0430\u044f \u0447\u0430\u0441\u0442\u044c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u043a\u0430\u0441\u0430\u0435\u0442\u0441\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 Cookie \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430 SameSite. \u041d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 Chrome 76, \u043e\u0436\u0438\u0434\u0430\u0435\u043c\u043e\u0433\u043e \u0432 \u0438\u044e\u043b\u0435, \u0431\u0443\u0434\u0435\u0442 \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u043d \u0444\u043b\u0430\u0433 «same-site-by-default-cookies», \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435 \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430 SameSite \u0432 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0435 Set-Cookie \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0441\u0442\u0430\u0432\u043b\u044f\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 «SameSite=Lax», \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0435 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 Cookie \u0434\u043b\u044f \u0432\u0441\u0442\u0430\u0432\u043a\u043e\u043a \u0441\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-33343","post","type-post","status-publish","format-standard","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\udd47V Chrome se objev\u00ed ochrana proti p\u0159enosu t\u0159et\u00edch stran Cookie a skryt\u00e9 identifikaci | ProHoster","description":"Spole\u010dnost Google p\u0159edstavila nadch\u00e1zej\u00edc\u00ed zm\u011bny v Chrome, kter\u00e9 maj\u00ed za c\u00edl 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