{"id":62,"date":"2018-11-22T16:46:33","date_gmt":"2018-11-22T15:46:33","guid":{"rendered":"http:\/\/it.ldf.mendelu.cz\/?p=62"},"modified":"2018-11-22T17:33:53","modified_gmt":"2018-11-22T16:33:53","slug":"bezpecnost-jak-si-vymyslet-slozite-heslo-ktere-nezapomenu","status":"publish","type":"post","link":"https:\/\/it.ldf.mendelu.cz\/?p=62","title":{"rendered":"Bezpe\u010dnost: Jak si vymyslet slo\u017eit\u00e9 heslo, kter\u00e9 nezapomenu?"},"content":{"rendered":"

V\u0161e lze vym\u00fd\u0161let slo\u017eit\u011b a jednodu\u0161e, z\u00e1le\u017e\u00ed na V\u00e1s, jak si vyberete.<\/p>\n

Vcelku p\u011bkn\u00fd n\u00e1vod si m\u016f\u017eete p\u0159e\u010d\u00edst zde.<\/a>
\nNen\u00ed to v\u0161ak kl\u00ed\u010d k \u00fasp\u011bchu.<\/p>\n

Abyste pochopili, pro\u010d je d\u016fle\u017eit\u00e9 m\u00edt slo\u017eit\u00e9 heslo, je nutn\u00e9 porozum\u011bt, jak \u00fato\u010dn\u00edci budou \u00fato\u010dit na bezpe\u010dnost V\u00e1mi pou\u017e\u00edvan\u00fdch slu\u017eeb.<\/p>\n

    \n
  1. Typ \u00fatoku: Brute-force
    \n\u00dato\u010dn\u00edk m\u00e1 program, kter\u00fd zkou\u0161\u00ed n\u00e1hodn\u00e9 kombinace hesel. Od 0000 a\u017e po #&!\u0161+\u00ed\u010d\u00e1\u00ed\u00e9++\u00fd\u017e\u0159. A p\u0159i takov\u00e9 kombinaci V\u00e1m dojde, \u017ee program mus\u00ed vyzkou\u0161et miliardy kombinac\u00ed hesel, aby jednu fin\u00e1ln\u00ed uh\u00e1dl. Pokud m\u00e1te heslo o 5 znac\u00edch, doba zkou\u0161en\u00edm n\u00e1hodn\u00fdch kombinac\u00ed m\u016f\u017ee b\u00fdt pouze n\u011bkolik vte\u0159in, maxim\u00e1ln\u011b minut.\u00a0 V p\u0159\u00edpad\u011b 40 znakov\u00e9ho hesla je po\u010det kombinac\u00ed tolik, \u017ee se \u00fato\u010dn\u00edkovi nepoda\u0159\u00ed ani za des\u00edtky let prolomit n\u00e1hodnou kombinac\u00ed Va\u0161e heslo.<\/li>\n
  2. Slovn\u00edkov\u00e9 \u00fatoky
    \n\u00dato\u010dn\u00edk m\u00e1 slovn\u00edk hesel, kter\u00fd program zkou\u0161\u00ed a kombinuje navz\u00e1jem. Pokud m\u00e1te opravdu stupidn\u00ed heslo, nap\u0159.: kocicka18, je \u0161ance, \u017ee V\u00e1m n\u011bkdo heslo prolom\u00ed velmi vysok\u00e1.<\/li>\n
  3. Phising
    \n\u00dato\u010dn\u00edk se vyd\u00e1v\u00e1 za organizaci, u kter\u00e9 m\u00e1te n\u011bjak\u00fd \u00fa\u010det (Va\u0161e banka, V\u00e1\u0161 emailov\u00fd poskytovatel, technick\u00e1 podpora z Va\u0161\u00ed firmy). Po\u0161le V\u00e1m email, ve kter\u00e9m je formul\u00e1\u0159 a \u017e\u00e1d\u00e1 V\u00e1s, abyste zadali svoje p\u0159ihla\u0161ovac\u00ed \u00fadaje do formul\u00e1\u0159e a p\u0159ihl\u00e1sili se. V \u017e\u00e1dn\u00e9m p\u0159\u00edpad\u011b NIKDY nevypl\u0148ujte emailov\u00e9 formul\u00e1\u0159e, kter\u00e9 V\u00e1m p\u0159\u00edjdou emailem. V\u017edy si rad\u011bji otev\u0159ete nov\u00e9 okno a doklikejte se k p\u0159ihl\u00e1\u0161en\u00ed do Va\u0161i aplikace\/banky\/organizace „ru\u010dn\u011b“. Dal\u0161\u00ed p\u011bkn\u00fd \u010dl\u00e1nek o phisingu si m\u016f\u017eete p\u0159e\u010d\u00edst nap\u0159.     zde<\/a>.<\/li>\n<\/ol>\n

     <\/p>\n

    Jak\u00e9 si m\u00e1m tedy nastavit heslo?<\/h1>\n
      \n
    1. \u010c\u00edm del\u0161\u00ed, t\u00edm lep\u0161\u00ed.<\/li>\n
    2. $,%,#,&,@,\u20ac,\\,[,],^,_,? a dal\u0161\u00ed znaky v hesle zt\u00ed\u017e\u00ed \u00fato\u010dn\u00edkovi h\u00e1d\u00e1n\u00ed.<\/li>\n
    3. Bez \u010d\u00edslic to nen\u00ed ono.<\/li>\n
    4. E zam\u011b\u0148te za 3, A za 4, Z za 7, I za 1, x za 10 (podle \u0159\u00edmsk\u00fdch \u010d\u00edslic) atd…<\/li>\n
    5. Velk\u00e1 a MaL\u00e1 p\u00cdSMENA.<\/li>\n
    6. Obsah hesla nesm\u00ed b\u00fdt spojov\u00e1n s Va\u0161\u00ed osobou, osobn\u00edmi \u00fadaji, telefonn\u00edm \u010d\u00edslem, adresou, jm\u00e9nem apod…<\/li>\n<\/ol>\n

      Pokud se c\u00edt\u00edte opravdu zapom\u011btliv\u011b a v\u00edte, \u017ee slo\u017eit\u00e9 heslo v hlav\u011b neudr\u017e\u00edte, zkuste vz\u00edt \u010desk\u00e9 slavn\u00e9 filmov\u00e9 hl\u00e1\u0161ky a tro\u0161ku na n\u011b uplatn\u011bte 6 v\u00fd\u0161e uveden\u00fdch pravidel.<\/p>\n

      V\u00ed\u0161 co, Sa\u0161o?<\/h2>\n