{"id":61445,"date":"2023-12-08T20:25:33","date_gmt":"2023-12-08T11:25:33","guid":{"rendered":"https:\/\/monolith.law\/cs\/?p=61445"},"modified":"2026-01-05T12:52:16","modified_gmt":"2026-01-05T03:52:16","slug":"nhkdrama-degitaltatoo-05","status":"publish","type":"post","link":"https:\/\/monolith.law\/cs\/internet\/nhkdrama-degitaltatoo-05","title":{"rendered":"NHK \"Digital tattoo\" Epizoda 5: IT technologie a pr\u00e1vo"},"content":{"rendered":"\n<p>Posledn\u00ed d\u00edl NHK sobotn\u00edho dramatu &#8220;Digit\u00e1ln\u00ed tetov\u00e1n\u00ed&#8221; (\u30c7\u30b8\u30bf\u30eb\u30fb\u30bf\u30c8\u30a5\u30fc), kter\u00fd byl vys\u00edl\u00e1n 15. \u010dervna, je drama s pr\u00e1vn\u00edkem jako hlavn\u00edm hrdinou, kter\u00fd se zab\u00fdv\u00e1 t\u00e9maty jako je \u0159e\u0161en\u00ed \u0161kod na pov\u011bsti na internetu. Jako pr\u00e1vn\u00edk, kter\u00fd se pod\u00edlel na p\u016fvodn\u00edm n\u00e1vrhu tohoto dramatu, vysv\u011btl\u00edm pr\u00e1vn\u00ed postupy a IT technologie, kter\u00e9 se v dramatu objevuj\u00ed.<\/p>\n\n\n\n<p><a href=\"https:\/\/monolith.law\/reputation\/nhkdrama-degitaltatoo-04\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/monolith.law\/reputation\/nhkdrama-degitaltatoo-04[ja]<\/a><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_53 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/monolith.law\/cs\/internet\/nhkdrama-degitaltatoo-05\/#Identifikace_odesilatele_anonymniho_e-mailu\" title=\"Identifikace odes\u00edlatele anonymn\u00edho e-mailu\">Identifikace odes\u00edlatele anonymn\u00edho e-mailu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/monolith.law\/cs\/internet\/nhkdrama-degitaltatoo-05\/#Vyzkum_cesty_odeslani_pomoci_analyzy_hlavicky_e-mailu\" title=\"V\u00fdzkum cesty odesl\u00e1n\u00ed pomoc\u00ed anal\u00fdzy hlavi\u010dky e-mailu\">V\u00fdzkum cesty odesl\u00e1n\u00ed pomoc\u00ed anal\u00fdzy hlavi\u010dky e-mailu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/monolith.law\/cs\/internet\/nhkdrama-degitaltatoo-05\/#Jak_zkontrolovat_hlavicku_e-mailu_v_GMailu\" title=\"Jak zkontrolovat hlavi\u010dku e-mailu v GMailu\">Jak zkontrolovat hlavi\u010dku e-mailu v GMailu<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/monolith.law\/cs\/internet\/nhkdrama-degitaltatoo-05\/#Pripady_kdy_lze_odesilatele_identifikovat_z_IP_adresy_odesilatele\" title=\"P\u0159\u00edpady, kdy lze odes\u00edlatele identifikovat z IP adresy odes\u00edlatele\">P\u0159\u00edpady, kdy lze odes\u00edlatele identifikovat z IP adresy odes\u00edlatele<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Identifikace_odesilatele_anonymniho_e-mailu\"><\/span>Identifikace odes\u00edlatele anonymn\u00edho e-mailu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V posledn\u00edm d\u00edle, epizod\u011b 5, byla zobrazena sc\u00e9na, kde se jeden z hlavn\u00edch hrdin\u016f, YouTuber Taiga (Daisuke Ito) (Kosuke Seto), setk\u00e1v\u00e1 se sv\u00fdm otcem, politikem Hidemitsu Ito (Masato Ibu). P\u0159ed t\u00edmto okam\u017eikem zjistil Taiga, \u017ee &#8220;pachatel&#8221;, kter\u00fd mu poslal instrukce p\u0159es e-mail, aby ho napadl, je v kancel\u00e1\u0159i Hidemitsu Ito. To zjistil anal\u00fdzou e-mailu, kter\u00fd napadl\u00fd mu\u017e obdr\u017eel.<\/p>\n\n\n\n<p>Tuto sc\u00e9nu vyu\u017eijeme k vysv\u011btlen\u00ed technick\u00fdch metod identifikace odes\u00edlatele e-mailu.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>&#8220;Chytil jsem mu\u017ee, kter\u00fd t\u011b napadl, a donutil ho mluvit. Instrukce k \u00fatoku na Daisukeho p\u0159i\u0161ly z na\u0161\u00ed kancel\u00e1\u0159e p\u0159es temn\u00fd web.&#8221;<br><\/p>\n<cite> Digital tattoo, epizoda 5 <\/cite><\/blockquote>\n\n\n\n<p>Sc\u00e9na, kter\u00e1 odpov\u00edd\u00e1 tomuto v\u00fdroku, je v prvn\u00ed epizod\u011b.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>&#8220;(Zkrout\u00ed mu ruku) Kdo t\u011b najal? Kdo t\u011b najal, aby ses pokusil napadnout Taigu?&#8221;<br> &#8220;Ne, nev\u00edm.&#8221;<br> &#8220;Kdo t\u011b najal! \u0158ekni to!&#8221;<br> &#8220;Na, na temn\u00e9m webu&#8230;&#8221;<br> &#8220;Temn\u00fd web?&#8221;<br> &#8220;P\u0159i\u0161el mi e-mail, \u017ee mi daj\u00ed milion, kdy\u017e t\u011b vystra\u0161\u00edm&#8230;&#8221;<\/p>\n\n\n\n<p> (vynech\u00e1no)<br><\/p>\n\n\n\n<p> &#8220;Uka\u017e mi ten e-mail!&#8221;<br><\/p>\n<cite> Digital tattoo, epizoda 1 <\/cite><\/blockquote>\n\n\n\n<p>Pachatel, kter\u00fd dal n\u00e1jemn\u00edkovi instrukce, samoz\u0159ejm\u011b neuv\u00e1d\u00ed, \u017ee je z kancel\u00e1\u0159e Hidemitsu Ito. M\u011bl by pou\u017e\u00edvat anonymn\u00ed e-mailovou adresu, jako je Yahoo!, a pos\u00edlat instrukce anonymn\u011b p\u0159es &#8220;temn\u00fd web&#8221;. I p\u0159esto je v n\u011bkter\u00fdch p\u0159\u00edpadech mo\u017en\u00e9 identifikovat odes\u00edlatele e-mailu pomoc\u00ed IT technologi\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Vyzkum_cesty_odeslani_pomoci_analyzy_hlavicky_e-mailu\"><\/span>V\u00fdzkum cesty odesl\u00e1n\u00ed pomoc\u00ed anal\u00fdzy hlavi\u010dky e-mailu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Kdy\u017e otev\u0159ete e-mail na obrazovce smartphonu nebo v GMailu atd., zobraz\u00ed se krom\u011b textu e-mailu tak\u00e9 informace jako &#8220;odes\u00edlatel&#8221; a &#8220;p\u0159edm\u011bt&#8221;. Tyto informace, kter\u00e9 nejsou sou\u010d\u00e1st\u00ed textu, jsou uvedeny v oblasti naz\u00fdvan\u00e9 &#8220;hlavi\u010dka e-mailu&#8221;. Pochopen\u00edm a anal\u00fdzou t\u00e9to &#8220;hlavi\u010dky e-mailu&#8221; m\u016f\u017eete do ur\u010dit\u00e9 m\u00edry zjistit cestu odesl\u00e1n\u00ed e-mailu.<\/p>\n\n\n\n<p>Nejprve si vzpome\u0148te na pohlednici. Pohlednice m\u00e1 p\u0159edn\u00ed a zadn\u00ed stranu. Text je na zadn\u00ed stran\u011b. Na p\u0159edn\u00ed stran\u011b jsou naps\u00e1ny informace o odes\u00edlateli a adres\u00e1tovi a m\u016f\u017ee tam b\u00fdt tak\u00e9 raz\u00edtko.<\/p>\n\n\n\n<p>Vztah mezi &#8220;hlavi\u010dkou a textem e-mailu&#8221; je podobn\u00fd vztahu mezi &#8220;p\u0159edn\u00ed a zadn\u00ed stranou pohlednice&#8221;. Pokud chcete vid\u011bt pouze obsah dopisu, nemus\u00edte se d\u00edvat na p\u0159edn\u00ed stranu. Chcete-li zjistit, kdo v\u00e1m tento dopis poslal a kdy byl z\u0159ejm\u011b odesl\u00e1n, pod\u00edv\u00e1te se na p\u0159edn\u00ed stranu pohlednice.<\/p>\n\n\n\n<p>A tato hlavi\u010dka e-mailu se po odesl\u00e1n\u00ed dopl\u0148uje. Je to podobn\u00e9 mechanismu, jak\u00fdm se na pohlednici otiskne raz\u00edtko.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Jak_zkontrolovat_hlavicku_e-mailu_v_GMailu\"><\/span>Jak zkontrolovat hlavi\u010dku e-mailu v GMailu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/monolith.law\/wp-content\/uploads\/2019\/06\/ss1.png\" alt=\"\" class=\"wp-image-1397\" \/><figcaption class=\"wp-element-caption\">Jak zkontrolovat hlavi\u010dku e-mailu v GMailu<\/figcaption><\/figure>\n\n\n\n<p>V p\u0159\u00edpad\u011b Gmailu m\u016f\u017eete zobrazit hlavi\u010dku e-mailu t\u00edm, \u017ee otev\u0159ete e-mail a z ikony v prav\u00e9m horn\u00edm rohu vyberete mo\u017enost &#8220;Zobrazit zdroj zpr\u00e1vy&#8221;.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/monolith.law\/wp-content\/uploads\/2019\/06\/ss2-1.png\" alt=\"\" class=\"wp-image-1398\" \/><figcaption class=\"wp-element-caption\">P\u0159\u00edklad hlavi\u010dky e-mailu<\/figcaption><\/figure>\n\n\n\n<p>Hlavi\u010dka e-mailu se postupn\u011b dopl\u0148uje na vrcholu b\u011bhem cesty odesl\u00e1n\u00ed. Pokud bychom se pokusili vysv\u011btlit podrobn\u00fd zp\u016fsob \u010dten\u00ed, stalo by se to pom\u011brn\u011b detailn\u00edm t\u00e9matem, tak\u017ee to vynech\u00e1me. Nicm\u00e9n\u011b, vzhledem k tomu, \u017ee se jedn\u00e1 o syst\u00e9m &#8220;dopl\u0148ov\u00e1n\u00ed naho\u0159e&#8221;, IP adresa odes\u00edlatele e-mailu se objev\u00ed na sam\u00e9m konci t\u00e9to hlavi\u010dky e-mailu. Je to jak\u00fdsi syst\u00e9m, kter\u00fd umo\u017e\u0148uje zjistit polohu po\u0161tovn\u00ed schr\u00e1nky, do kter\u00e9 byla pohlednice nejprve vhozena, pokud se pod\u00edv\u00e1te na hlavi\u010dku e-mailu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pripady_kdy_lze_odesilatele_identifikovat_z_IP_adresy_odesilatele\"><\/span>P\u0159\u00edpady, kdy lze odes\u00edlatele identifikovat z IP adresy odes\u00edlatele<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>V tomto dramatu byl odes\u00edlatel osobou z kancel\u00e1\u0159e Hideitsu Itou a IP adresa kancel\u00e1\u0159e byla odes\u00edlatelskou adresou. V p\u0159\u00edpad\u011b pevn\u00fdch linek, jako jsou dom\u00e1cnosti nebo kancel\u00e1\u0159e, existuj\u00ed dva typy IP adres: ty, kter\u00e9 se m\u011bn\u00ed ka\u017ed\u00fd den, a ty, kter\u00e9 se nem\u011bn\u00ed (tzv. statick\u00e9 IP adresy). V dramatu to nen\u00ed zm\u00edn\u011bno, ale IP adresa kancel\u00e1\u0159e Hideitsu Itou je statick\u00e1 a Taiga si pravd\u011bpodobn\u011b n\u011bjak\u00fdm zp\u016fsobem uv\u011bdomil, \u017ee &#8220;tato (statick\u00e1) IP adresa je IP adresa kancel\u00e1\u0159e Hideitsu Itou&#8221;.<\/p>\n\n\n\n<p>Co se t\u00fd\u010de tohoto &#8220;n\u011bjak\u00e9ho zp\u016fsobu&#8221;, podle zobrazen\u00ed v dramatu to pravd\u011bpodobn\u011b bylo n\u00e1sleduj\u00edc\u00ed:<\/p>\n\n\n\n<p>Za prv\u00e9, &#8220;mailov\u00fd server&#8221; je ozna\u010den IP adresou a odpov\u00eddaj\u00edc\u00edm n\u00e1zvem hostitele. Pokud si z\u00edsk\u00e1te vlastn\u00ed dom\u00e9nu a z\u0159\u00edd\u00edte si vlastn\u00ed mailov\u00fd server doma, n\u00e1zev hostitele bude obsahovat vlastn\u00ed dom\u00e9nu Hideitsu Itou, nap\u0159\u00edklad &#8220;smtp.itouhidemitsu.jp&#8221;, a pokud si p\u0159e\u010dtete hlavi\u010dku mailu, kde je n\u00e1zev hostitele uveden, je na prvn\u00ed pohled jasn\u00e9, \u017ee byl odesl\u00e1n z serveru Hideitsu Itou.<\/p>\n\n\n\n<p>Krom\u011b toho, pokud je to statick\u00e1 IP adresa, m\u016f\u017ee b\u00fdt pachatel identifikov\u00e1n porovn\u00e1n\u00edm s minul\u00fdmi e-maily. Nap\u0159\u00edklad, pokud v\u00e1m b\u00fdval\u00fd partner pos\u00edl\u00e1 anonymn\u00ed obt\u011b\u017euj\u00edc\u00ed e-maily, i kdy\u017e je e-mailov\u00e1 adresa sama o sob\u011b &#8220;anonymn\u00ed&#8221;,<\/p>\n\n\n\n<ul>\n<li>IP adresa uveden\u00e1 v hlavi\u010dce e-mailu z doby vztahu<\/li>\n\n\n\n<li>IP adresa uveden\u00e1 v hlavi\u010dce anonymn\u011b odeslan\u00e9ho obt\u011b\u017euj\u00edc\u00edho e-mailu<\/li>\n<\/ul>\n\n\n\n<p>pokud se shoduj\u00ed, je jasn\u00e9, \u017ee &#8220;pachatel je b\u00fdval\u00fd partner&#8221;.<\/p>\n\n\n\n<p>V p\u0159\u00edpad\u011b dramatu, Taiga m\u011bl s Hideitsu Itou t\u00e9m\u011b\u0159 \u017e\u00e1dn\u00e9 styky po mnoho let a ob\u010das mluvil po telefonu jen se sekret\u00e1\u0159kou, tak\u017ee je nejist\u00e9, zda v\u011bd\u011bl o (statick\u00e9) IP adrese kancel\u00e1\u0159e Hideitsu Itou. Je pravd\u011bpodobn\u00e9, \u017ee v n\u00e1zvu hostitele byla obsa\u017eena vlastn\u00ed dom\u00e9na Hideitsu Itou.<\/p>\n\n\n\n<p>Av\u0161ak, identifikace odes\u00edlatele z hlavi\u010dky e-mailu (a v n\u00ed uveden\u00e9 IP adresy odes\u00edlatele) je v\u00fdjime\u010dn\u00fd p\u0159\u00edpad. Obecn\u011b \u0159e\u010deno, toto vy\u0161et\u0159ov\u00e1n\u00ed je pom\u011brn\u011b obt\u00ed\u017en\u00e9.<\/p>\n\n\n\n<a href=\"https:\/\/monolith.law\/digitaltattoo\" class=\"su-button su-button-style-flat\" style=\"color:#FFFFFF;background-color:#2FA8E1;border-color:#2687b4;border-radius:7px;-moz-border-radius:7px;-webkit-border-radius:7px\" target=\"__blank\"><span style=\"color:#FFFFFF;padding:0px 20px;font-size:16px;line-height:32px;border-color:#6ec3ea;border-radius:7px;-moz-border-radius:7px;-webkit-border-radius:7px;text-shadow:none;-moz-text-shadow:none;-webkit-text-shadow:none\"> Podrobn\u011bj\u0161\u00ed vysv\u011btlen\u00ed &#8220;Digital tattoo&#8221; najdete zde[ja]<\/span><\/a>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/monolith.law\/reputation\/email-sender-identification\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/monolith.law\/reputation\/email-sender-identification[ja]<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Posledn\u00ed d\u00edl NHK sobotn\u00edho dramatu &#8220;Digit\u00e1ln\u00ed tetov\u00e1n\u00ed&#8221; (\u30c7\u30b8\u30bf\u30eb\u30fb\u30bf\u30c8\u30a5\u30fc), kter\u00fd byl vys\u00edl\u00e1n 15. \u010dervna, je drama s pr\u00e1vn\u00edkem jako hlavn\u00edm hrdinou, kter\u00fd se zab\u00fdv\u00e1 t\u00e9maty jako je \u0159e\u0161en\u00ed \u0161kod na  [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":69161,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[21,41],"acf":[],"_links":{"self":[{"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/posts\/61445"}],"collection":[{"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/users\/32"}],"replies":[{"embeddable":true,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/comments?post=61445"}],"version-history":[{"count":4,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/posts\/61445\/revisions"}],"predecessor-version":[{"id":69162,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/posts\/61445\/revisions\/69162"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/media\/69161"}],"wp:attachment":[{"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/media?parent=61445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/categories?post=61445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/monolith.law\/cs\/wp-json\/wp\/v2\/tags?post=61445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}