{"id":5211,"date":"2024-08-09T16:16:16","date_gmt":"2024-08-09T14:16:16","guid":{"rendered":"https:\/\/www.websupport.cz\/blog\/?p=5211"},"modified":"2025-03-11T21:18:30","modified_gmt":"2025-03-11T20:18:30","slug":"heslo-ktere-nikdy-nezapomenete-2fa","status":"publish","type":"post","link":"https:\/\/www.websupport.cz\/blog\/2024\/08\/heslo-ktere-nikdy-nezapomenete-2fa\/","title":{"rendered":"Heslo, kter\u00e9 nikdy nezapomenete. Nastavte si 2FA"},"content":{"rendered":"\n<p>Pokud provozujete e-shop, nebo se nach\u00e1z\u00edte v opa\u010dn\u00e9 situaci &#8211; jako nakupuj\u00edc\u00ed v online obchod\u011b, ur\u010dit\u011b tu situaci zn\u00e1te. Opust\u00edte napln\u011bn\u00fd ko\u0161\u00edk, pokud se pro dokon\u010den\u00ed n\u00e1kupu mus\u00edte registrovat. Znamen\u00e1 to toti\u017e &#8222;kolik \u00fa\u010dt\u016f, tolik hesel&#8220;. A ka\u017ed\u00e9 heslo by m\u011blo b\u00fdt jedine\u010dn\u00e9 \u2013 slo\u017een\u00e9 z minim\u00e1ln\u011b 8 znak\u016f, velk\u00e9ho p\u00edsmena, \u010d\u00edslice, speci\u00e1ln\u00edho znaku a tak d\u00e1le. V\u0161ak to zn\u00e1te.<\/p>\n\n\n\n<p>Pokud m\u00e1te mnoho \u00fa\u010dt\u016f, postupn\u011b v\u00e1s to nut\u00ed volit stejn\u00e1 hesla pro v\u00edce slu\u017eeb, co\u017e nen\u00ed nejbezpe\u010dn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed. Ani pro v\u00e1s, ani pro e-shop.<\/p>\n\n\n\n<p>Existuje tedy pohodln\u00fd a p\u0159itom st\u00e1le bezpe\u010dn\u00fd zp\u016fsob p\u0159ihl\u00e1\u0161en\u00ed? Ano \u2013 <strong>p\u0159ihla\u0161ov\u00e1n\u00ed bez hesla (passwordless login)<\/strong>. Pod\u00edvejme se, jak to funguje a jak\u00e9 jsou v\u00fdhody.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak je mo\u017en\u00e9 se p\u0159ihl\u00e1sit bez hesla? <\/h2>\n\n\n\n<p>P\u0159i p\u0159ihla\u0161ov\u00e1n\u00ed do \u00fa\u010dtu mus\u00ed u\u017eivatel\/ka zadat identifika\u010dn\u00ed \u00fadaje. K ov\u011b\u0159en\u00ed jeho\/jej\u00ed identifikace se standardn\u011b vyu\u017e\u00edvaj\u00ed tyto mo\u017enosti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D\u011bdi\u010dn\u00fd znak:<\/strong> to, co jste zd\u011bdili &#8211; nap\u0159\u00edklad otisk prstu nebo o\u010dn\u00ed duhovku <\/li>\n\n\n\n<li><strong>Vlastnictv\u00ed:<\/strong> to, co m\u00e1te &#8211; nap\u0159\u00edklad fyzick\u00fd kl\u00ed\u010d nebo e-mailov\u00fd \u00fa\u010det, kam je zasl\u00e1n k\u00f3d k ov\u011b\u0159en\u00ed <\/li>\n\n\n\n<li><strong>Znalost:<\/strong> to, co v\u00edte &#8211; nap\u0159\u00edklad standardn\u00ed heslo<\/li>\n<\/ul>\n\n\n\n<p>Ve v\u0161ech p\u0159\u00edpadech se p\u0159edpokl\u00e1d\u00e1, \u017ee p\u0159\u00edstup k tomuto &#8222;kl\u00ed\u010di&#8220; m\u00e1 pouze opr\u00e1vn\u011bn\u00e1 osoba.<\/p>\n\n\n\n<p>V p\u0159\u00edpad\u011b p\u0159ihla\u0161ov\u00e1n\u00ed bez hesla slou\u017e\u00ed jako kl\u00ed\u010d prvn\u00ed dv\u011b mo\u017enosti, tedy d\u011bdi\u010dn\u00e9 znaky nebo n\u011bco, co vlastn\u00edme. Znamen\u00e1 to, \u017ee ji\u017e v\u00edce nepot\u0159ebujeme zad\u00e1vat alfanumerick\u00e9 heslo, tedy klasick\u00e9 heslo slo\u017een\u00e9 z p\u00edsmen a \u010d\u00edslic.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co jsou to biometrick\u00e9 \u00fadaje? <\/h2>\n\n\n\n<p>Do n\u011bkter\u00fdch slu\u017eeb se m\u016f\u017eeme p\u0159ihla\u0161ovat tzv. &#8222;biometri\u00ed&#8220;. To znamen\u00e1, \u017ee k ov\u011b\u0159en\u00ed sv\u00e9 identity pou\u017eijete sv\u00e9 fyzick\u00e9 (d\u011bdi\u010dn\u00e9) znaky, kter\u00e9 jsou pro ka\u017ed\u00e9ho \u010dlov\u011bka jedine\u010dn\u00e9.<\/p>\n\n\n\n<p>Ani identick\u00e1 dvoj\u010data nemaj\u00ed stejn\u00e9 <strong>otisky prst\u016f<\/strong>. A tento fakt z nich z\u00e1rove\u0148 d\u011bl\u00e1 jedine\u010dn\u00fd p\u0159\u00edstupov\u00fd kl\u00ed\u010d. P\u0159i <strong>skenov\u00e1n\u00ed tv\u00e1\u0159e<\/strong> u\u017eivatele to funguje na stejn\u00e9m principu.<\/p>\n\n\n\n<p>Dobr\u00e1 zpr\u00e1va je, \u017ee v\u011bt\u0161ina dne\u0161n\u00edch smartphon\u016f m\u00e1 ji\u017e standardn\u011b zabudovan\u00fd pom\u011brn\u011b kvalitn\u00ed software na \u010dten\u00ed otisk\u016f prst\u016f i tv\u00e1\u0159e.<\/p>\n\n\n\n<p>Krom\u011b jedine\u010dn\u00e9 identifikace a pohodln\u011bj\u0161\u00edho p\u0159ihl\u00e1\u0161en\u00ed m\u00e1 biometrie i dal\u0161\u00ed obrovskou v\u00fdhodu. <strong>Nikdy nezapomenete sv\u00e9 heslo, proto\u017ee ho nos\u00edte st\u00e1le s sebou.<\/strong> A t\u00edm bude va\u0161e slu\u017eba neust\u00e1le dostupn\u00e1 bez jak\u00fdchkoliv dodate\u010dn\u00fdch bari\u00e9r.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dal\u0161\u00ed mo\u017enosti aneb Co je to fyzick\u00fd kl\u00ed\u010d? <\/h2>\n\n\n\n<p>M\u00edsto autentizace biometri\u00ed lze vyu\u017e\u00edt i extern\u00ed hardware, jednodu\u0161e \u0159e\u010deno fyzick\u00fd kl\u00ed\u010d. Jedn\u00e1 se v podstat\u011b o <strong>USB disk nebo kartu s p\u0159\u00edslu\u0161n\u00fdm softwarem<\/strong>. Tento jedine\u010dn\u00fd kl\u00ed\u010d vlo\u017e\u00edte do sv\u00e9ho po\u010d\u00edta\u010de nebo p\u0159ilo\u017e\u00edte na \u010dte\u010dku ve sv\u00e9m smartphonu. T\u00edm se jednodu\u0161e a komfortn\u011b identifikujete a ov\u011b\u0159\u00edte jako opr\u00e1vn\u011bn\u00e1 osoba.<\/p>\n\n\n\n<p>V\u00fdhodou je, \u017ee jde o velmi pohodln\u00e9 a rychl\u00e9 \u0159e\u0161en\u00ed p\u0159ihl\u00e1\u0161en\u00ed. Drobnou nev\u00fdhodou je, \u017ee ho mus\u00edte m\u00edt fyzicky st\u00e1le u sebe p\u0159i ka\u017ed\u00e9m p\u0159ihl\u00e1\u0161en\u00ed do sv\u00e9ho \u00fa\u010dtu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">P\u0159ihla\u0161ov\u00e1n\u00ed bez hesla ve Websupportu? U\u017e d\u00e1vno<\/h2>\n\n\n\n<p>U n\u00e1s se sna\u017e\u00edme b\u00fdt neust\u00e1le o krok vp\u0159ed. Jednoduch\u00fd a bezpe\u010dn\u00fd p\u0159ihla\u0161ovac\u00ed proces do na\u0161ich slu\u017eeb je pro n\u00e1s trvalou prioritou.<\/p>\n\n\n\n<p><strong>Pokud jste na\u0161\u00edm klientem, v\u00edte, \u017ee do sv\u00e9ho konta se m\u016f\u017eete p\u0159ihl\u00e1sit i bez hesla. Tedy mnohem pohodln\u011bji, ale p\u0159esto st\u00e1le bezpe\u010dn\u011b.<\/strong> Pro tyto \u00fa\u010dely m\u016f\u017eete vyu\u017e\u00edt biometrie nebo fyzick\u00fd kl\u00ed\u010d.<\/p>\n\n\n\n<p>P\u0159i biometrii m\u00e1te mo\u017enost vyu\u017e\u00edt otisk prstu nebo skenov\u00e1n\u00ed tv\u00e1\u0159e. Z hlediska bezpe\u010dnosti je podstatn\u00e9, \u017ee tyto va\u0161e citliv\u00e9 \u00fadaje neopou\u0161t\u011bj\u00ed va\u0161e za\u0159\u00edzen\u00ed. Zabezpe\u010den\u00fd protokol funguj\u00edc\u00ed na b\u00e1zi kryptografie se postar\u00e1 o va\u0161e bezpe\u010dn\u00e9 ov\u011b\u0159en\u00ed a n\u00e1m jen za\u0161le zpr\u00e1vu, \u017ee ov\u011b\u0159en\u00ed prob\u011bhlo \u00fasp\u011b\u0161n\u011b. Jednodu\u0161e, komfortn\u011b a bezpe\u010dn\u011b.<\/p>\n\n\n\n<p>Va\u0161e \u00fadaje z\u016fst\u00e1vaj\u00ed jen ve va\u0161em za\u0159\u00edzen\u00ed i v p\u0159\u00edpad\u011b, \u017ee pou\u017e\u00edv\u00e1te pro p\u0159ihl\u00e1\u0161en\u00ed do va\u0161eho \u00fa\u010dtu fyzick\u00fd kl\u00ed\u010d. Jeho dal\u0161\u00ed v\u00fdhodou je, \u017ee m\u016f\u017eete pou\u017e\u00edt jak\u00fdkoliv typ, kter\u00fd podporuje FIDO2\/U2F standard. Cenov\u011b dostupn\u00e9 a obl\u00edben\u00e9 kl\u00ed\u010de jsou nap\u0159\u00edklad YubiKey nebo Idem Key od GoTrust.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Je\u0161t\u011b vy\u0161\u0161\u00ed zabezpe\u010den\u00ed? Vyzkou\u0161ejte dvoufaktorovou autentizaci (2FA) <\/h2>\n\n\n\n<p>Ka\u017ed\u00fd z\u00e1kazn\u00edk si u n\u00e1s m\u016f\u017ee zabezpe\u010den\u00ed sv\u00e9ho \u00fa\u010dtu v\u00fdrazn\u011b zv\u00fd\u0161it velmi jednoduch\u00fdm zp\u016fsobem \u2013 mo\u017enost\u00ed<strong> dvoufaktorov\u00e9 autentizace (2FA).<\/strong><\/p>\n\n\n\n<p>V p\u0159\u00edpad\u011b zapnut\u00e9 dvoufaktorov\u00e9 autentizace se k va\u0161im p\u0159ihla\u0161ovac\u00edm \u00fadaj\u016fm p\u0159i p\u0159ihl\u00e1\u0161en\u00ed vy\u017eaduje je\u0161t\u011b dal\u0161\u00ed faktor. Pou\u017eit\u00ed druh\u00e9ho faktoru spolehliv\u011b ochr\u00e1n\u00ed va\u0161e konto zejm\u00e9na v p\u0159\u00edpad\u011b, \u017ee potenci\u00e1ln\u00ed \u00fato\u010dn\u00edk z\u00edskal va\u0161e p\u0159ihla\u0161ovac\u00ed \u00fadaje. T\u00edm se v\u00fdrazn\u011b sni\u017euje i riziko \u00fasp\u011b\u0161nosti \u2013 dnes u\u017e velmi \u010dast\u00fdch \u2013 <a href=\"https:\/\/www.websupport.cz\/blog\/2021\/10\/jak-se-branit-proti-phishingu\/\">phishingov\u00fdch \u00fatok\u016f<\/a>.<\/p>\n\n\n\n<p>Po p\u0159ihl\u00e1\u0161en\u00ed do va\u0161eho \u00fa\u010dtu si m\u016f\u017eete jako druh\u00fd faktor zvolit ji\u017e zm\u00edn\u011bnou <strong>biometrii nebo fyzick\u00fd kl\u00ed\u010d<\/strong>, kter\u00e9 si m\u016f\u017eete sp\u00e1rovat se sv\u00fdm \u00fa\u010dtem velmi jednodu\u0161e a doslova okam\u017eit\u011b.<\/p>\n\n\n\n<p>Nebo si m\u00edsto toho m\u016f\u017eete vybrat libovolnou autentiza\u010dn\u00ed TOTP (Time-based One-Time Password) aplikaci, kterou si nainstalujete do sv\u00e9ho smartphonu. Obl\u00edben\u00e9 jsou nap\u0159\u00edklad Google Authenticator nebo Microsoft Authenticator. Ka\u017ed\u00e9 p\u0159ihl\u00e1\u0161en\u00ed do va\u0161eho \u00fa\u010dtu tak bude vy\u017eadovat nejen heslo, ale i unik\u00e1tn\u00ed, \u010dasov\u011b omezen\u00fd k\u00f3d z t\u00e9to aplikace jako druh\u00fd faktor.<\/p>\n\n\n\n<p><strong>Minimum \u010dasu, vysok\u00e9 zabezpe\u010den\u00ed.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1le\u017e\u00ed v\u00e1m na bezpe\u010dnosti? P\u0159idejte se! <\/h2>\n\n\n\n<p>Pokud jsme v\u00e1s t\u00edmto \u010dl\u00e1nkem p\u0159esv\u011bd\u010dili, p\u0159idejte se k na\u0161im spokojen\u00fdm z\u00e1kazn\u00edk\u016fm, kte\u0159\u00ed p\u0159ihla\u0161ov\u00e1n\u00ed bez hesla nebo dvoufaktorovou autentizaci aktivn\u011b vyu\u017e\u00edvaj\u00ed. Zvolte si tu mo\u017enost, kter\u00e1 v\u00e1m podle va\u0161ich preferenc\u00ed vyhovuje nejv\u00edce.<\/p>\n\n\n\n<p>Ob\u011b mo\u017enosti najdete ve sv\u00e9m administra\u010dn\u00edm rozhran\u00ed webadmin. Vpravo naho\u0159e klikn\u011bte na n\u00e1zev va\u0161eho konta \u2013 Zabezpe\u010den\u00ed a p\u0159ihl\u00e1\u0161en\u00ed. V p\u0159\u00edpad\u011b dvoufaktorov\u00e9 autentizace jsme pro v\u00e1s p\u0159ipravili i takov\u00fdto <a href=\"https:\/\/www.websupport.cz\/podpora\/kb\/dvoufaktorova-autentifikace\/\">jednoduch\u00fd n\u00e1vod<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pokud provozujete e-shop, nebo se nach\u00e1z\u00edte v opa\u010dn\u00e9 situaci &#8211; jako nakupuj\u00edc\u00ed v online obchod\u011b, ur\u010dit\u011b tu situaci zn\u00e1te. Opust\u00edte napln\u011bn\u00fd ko\u0161\u00edk, pokud se pro dokon\u010den\u00ed n\u00e1kupu mus\u00edte registrovat. Znamen\u00e1 to toti\u017e &#8222;kolik \u00fa\u010dt\u016f, tolik hesel&#8220;. A ka\u017ed\u00e9 heslo by m\u011blo b\u00fdt jedine\u010dn\u00e9 \u2013 slo\u017een\u00e9 z minim\u00e1ln\u011b 8 znak\u016f, velk\u00e9ho p\u00edsmena, \u010d\u00edslice, speci\u00e1ln\u00edho znaku a [&hellip;]<\/p>\n","protected":false},"author":52,"featured_media":5217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[575,410],"tags":[812,881,19],"class_list":["post-5211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bezpecnost","category-uzivatel","tag-bezpecnost-2","tag-prihlasovani-2","tag-websupport"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Heslo, kter\u00e9 nikdy nezapomenete. Nastavte si 2FA - Websupport.cz Blog<\/title>\n<meta name=\"description\" content=\"Pokud m\u00e1te mnoho \u00fa\u010dt\u016f, postupn\u011b v\u00e1s to nut\u00ed volit stejn\u00e1 hesla pro v\u00edce slu\u017eeb, co\u017e nen\u00ed nejbezpe\u010dn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed. Pod\u00edvejme se, jak funguje p\u0159ihl\u00e1\u0161en\u00ed bez hesla a jak\u00e9 jsou v\u00fdhody.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.websupport.cz\/blog\/2024\/08\/heslo-ktere-nikdy-nezapomenete-2fa\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Heslo, kter\u00e9 nikdy nezapomenete. Nastavte si 2FA - Websupport.cz Blog\" \/>\n<meta property=\"og:description\" content=\"Pokud m\u00e1te mnoho \u00fa\u010dt\u016f, postupn\u011b v\u00e1s to nut\u00ed volit stejn\u00e1 hesla pro v\u00edce slu\u017eeb, co\u017e nen\u00ed nejbezpe\u010dn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed. 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