{"id":21851,"date":"2025-03-26T20:28:21","date_gmt":"2025-03-26T18:28:21","guid":{"rendered":"https:\/\/masterbase.com\/es\/es\/es\/?p=21851"},"modified":"2025-03-26T20:31:01","modified_gmt":"2025-03-26T18:31:01","slug":"kyberneticka-bezpecnost-e-mailu-ako-sa-vyhnut-phishingovym-utokom-malveru-a-podvodom-pomocou-pokrocileho-overovania","status":"publish","type":"post","link":"https:\/\/masterbase.com\/sk\/ciberseguridad-en-correos-electronicos-como-evitar-ataques-de-phishing-malware-y-fraudes-con-autenticacion-avanzada\/masterbase\/","title":{"rendered":"Kybernetick\u00e1 bezpe\u010dnos\u0165 e-mailov: Ako zabr\u00e1ni\u0165 phishingov\u00fdm \u00fatokom, malv\u00e9ru a podvodom pomocou pokro\u010dil\u00e9ho overovania"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Viac ako 90% kybernetick\u00fdch \u00fatokov za\u010d\u00edna \u0161kodliv\u00fdm e-mailom, a to bu\u010f prostredn\u00edctvom phishingu, malv\u00e9ru alebo cielen\u00e9ho podvodu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Existuje v\u0161ak sp\u00f4sob, ako posilni\u0165 zabezpe\u010denie e-mailov a minimalizova\u0165 tieto rizik\u00e1: <strong>pokro\u010dil\u00e9 overovanie<\/strong>. Protokoly ako napr. <strong>SPF, DKIM a DMARC<\/strong> Chr\u00e1nia podniky pred podvodmi a phishingom a tie\u017e zlep\u0161uj\u00fa doru\u010dite\u013enos\u0165 legit\u00edmnych e-mailov, \u010d\u00edm zabezpe\u010duj\u00fa, \u017ee sa dostan\u00fa do schr\u00e1nky a nie do prie\u010dinka so spamom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V tomto \u010dl\u00e1nku sa budeme zaobera\u0165 <strong>hlavn\u00e9 hrozby v elektronickej po\u0161te, k\u013e\u00fa\u010dov\u00e1 \u00faloha overovania a sp\u00f4sob, ak\u00fdm MasterBase\u00ae zabezpe\u010duje bezpe\u010dnos\u0165 a efekt\u00edvnos\u0165 podnikovej po\u0161ty<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Naj\u010dastej\u0161ie e-mailov\u00e9 hrozby<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udce9<\/strong><strong> 1. Phishing: naj\u010dastej\u0161\u00ed podvod<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Phishing je met\u00f3da \u00fatoku, pri ktorej sa kyberzlo\u010dinci vyd\u00e1vaj\u00fa za d\u00f4veryhodn\u00e9 spolo\u010dnosti alebo jednotlivcov, aby pou\u017e\u00edvate\u013eov oklamali a prin\u00fatili ich ukradn\u00fa\u0165 poverovacie \u00fadaje alebo citliv\u00e9 \u00fadaje.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> E-mail, ktor\u00fd sa tv\u00e1ri ako e-mail od banky a \u017eiada v\u00e1s o aktualiz\u00e1ciu prihlasovac\u00edch \u00fadajov pomocou podvodn\u00e9ho odkazu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83c\udfaf<\/strong><strong> 2. Spear Phishing: cielen\u00e9 \u00fatoky<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na rozdiel od hromadn\u00e9ho phishingu sa spear phishing zameriava na konkr\u00e9tne osoby a vyu\u017e\u00edva personalizovan\u00e9 inform\u00e1cie, aby bol podvod presved\u010divej\u0161\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> Zamestnanec dostane falo\u0161n\u00fd e-mail, v ktorom gener\u00e1lny riadite\u013e \u00fadajne \u017eiada o urgentn\u00e9 prevody alebo pr\u00edstup k d\u00f4vern\u00fdm inform\u00e1ci\u00e1m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udcbc<\/strong><strong> 3. Kompromit\u00e1cia firemnej elektronickej po\u0161ty (BEC): Podvody vo firm\u00e1ch<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00dato\u010dn\u00edci kompromituj\u00fa legit\u00edmne firemn\u00e9 e-mailov\u00e9 konto a pou\u017e\u00edvaj\u00fa ho na odosielanie podvodn\u00fdch pokynov zamestnancom alebo dod\u00e1vate\u013eom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> Kyberzlo\u010dinec sa vyd\u00e1va za finan\u010dn\u00e9 oddelenie a odo\u0161le e-mail so \u017eiados\u0165ou o platbu na podvodn\u00fd \u00fa\u010det.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83e\udda0<\/strong><strong> 4. Malv\u00e9r a ransomv\u00e9r v pr\u00edloh\u00e1ch<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mnoh\u00e9 \u00fatoky za\u010d\u00ednaj\u00fa zdanlivo ne\u0161kodnou pr\u00edlohou, ktor\u00e1 po otvoren\u00ed nain\u0161taluje do syst\u00e9mu obete \u0161kodliv\u00fd softv\u00e9r alebo ransomv\u00e9r.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> Zamestnanec dostane s\u00fabor programu Word so \u0161kodliv\u00fdmi makrami, ktor\u00e9 do firemnej siete nain\u0161taluj\u00fa ransomv\u00e9r.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>K\u013e\u00fa\u010dov\u00e1 \u00faloha SPF, DKIM a DMARC v zabezpe\u010den\u00ed e-mailov<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na zmiernenie t\u00fdchto riz\u00edk je nevyhnutn\u00e9 <strong>overovanie e-mailov a zabr\u00e1nenie tret\u00edm stran\u00e1m v podvrhnut\u00ed firemn\u00fdch dom\u00e9n.<\/strong>. V tomto pr\u00edpade vstupuj\u00fa do hry tri k\u013e\u00fa\u010dov\u00e9 protokoly:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39<\/strong><strong> SPF (Sender Policy Framework): prv\u00fd filter d\u00f4veryhodnosti<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF zabra\u0148uje kyberzlo\u010dincom posiela\u0165 e-maily z falo\u0161nej dom\u00e9ny t\u00fdm, \u017ee overuje, ktor\u00e9 servery s\u00fa opr\u00e1vnen\u00e9 posiela\u0165 e-maily v mene spolo\u010dnosti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> Ak dostanete e-mail z dom\u00e9ny va\u0161ej banky, SPF skontroluje, \u010di bol skuto\u010dne odoslan\u00fd z autorizovan\u00e9ho servera.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39<\/strong><strong> DKIM (DomainKeys Identified Mail): Digit\u00e1lny podpis pre e-mail<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM prid\u00e1va vrstvu zabezpe\u010denia t\u00fdm, \u017ee ku ka\u017ed\u00e9mu odoslan\u00e9mu e-mailu pripoj\u00ed jedine\u010dn\u00fd digit\u00e1lny podpis, ktor\u00fd zaru\u010duje, \u017ee spr\u00e1va nebola po\u010das prenosu zmenen\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> Ak sa hacker pok\u00fasi upravi\u0165 e-mail na ceste do va\u0161ej schr\u00e1nky, DKIM ho odhal\u00ed a zablokuje.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39<\/strong><strong> DMARC (Domain-based Message Authentication, Reporting &amp; Conformance): Posledn\u00e1 l\u00ednia obrany<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DMARC sa spolieha na SPF a DKIM pri rozhodovan\u00ed o tom, ako zaobch\u00e1dza\u0165 s podozriv\u00fdmi e-mailami a predch\u00e1dza\u0165 phishingov\u00fdm a podvrhnut\u00fdm \u00fatokom. Poskytuje tie\u017e spr\u00e1vy o pokusoch o phishing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Pr\u00edklad:<\/strong> Ak sa \u00fato\u010dn\u00edk pok\u00fasi odosla\u0165 falo\u0161n\u00e9 e-maily z firemnej dom\u00e9ny, DMARC m\u00f4\u017ee tieto e-maily odmietnu\u0165 alebo ich ozna\u010di\u0165 ako spam.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pr\u00edklad fal\u0161ovania e-mailovej adresy<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Bez n\u00e1le\u017eitej ochrany, ako s\u00fa SPF, DKIM a DMARC, je ve\u013emi jednoduch\u00e9 podvrhn\u00fa\u0165 e-mail a predstiera\u0165, \u017ee poch\u00e1dza od legit\u00edmnej a d\u00f4veryhodnej spolo\u010dnosti.<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zdokumentovan\u00fd pr\u00edpad dokazuje nasledovn\u00e9:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bola identifikovan\u00e1 jedna zn\u00e1ma leteck\u00e1 spolo\u010dnos\u0165 (Dassault-Aviation), ktor\u00e1 nemala nakonfigurovan\u00fd protokol DMARC.<\/li>\n\n\n\n<li>Bolo mo\u017en\u00e9 verejne zisti\u0165, kto je gener\u00e1lny riadite\u013e a ak\u00fd je obvykl\u00fd form\u00e1t firemn\u00fdch e-mailov\u00fdch adries.<\/li>\n\n\n\n<li>Na z\u00e1klade t\u00fdchto inform\u00e1ci\u00ed bol vytvoren\u00fd falo\u0161n\u00fd e-mail z adresy, ktor\u00e1 napodob\u0148ovala adresu \u010dlena v\u00fdkonn\u00e9ho v\u00fdboru. Spr\u00e1va bola \u00faspe\u0161ne odoslan\u00e1 a prijat\u00e1 bez toho, aby bola zablokovan\u00e1 alebo ozna\u010den\u00e1 ako podozriv\u00e1.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u00f4\u017eu SPF, DKIM a DMARC \u00faplne zabr\u00e1ni\u0165 phishingu? Nie \u00faplne.<\/strong><br>Pou\u017e\u00edvate\u013eov je st\u00e1le mo\u017en\u00e9 oklama\u0165 pou\u017eit\u00edm vizu\u00e1lne podobn\u00fdch adries (napr. customer-amazon.com, Linkedln.com s mal\u00fdm p\u00edsmenom \"L\" namiesto \"i\" alebo service-dashlane.com). Tieto varianty je \u0165a\u017ek\u00e9 odhali\u0165 vo\u013en\u00fdm okom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Av\u0161ak, <strong>Protokoly SPF, DKIM a DMARC zabra\u0148uj\u00fa \u00fato\u010dn\u00edkom odosiela\u0165 po\u0161tu pomocou skuto\u010dnej dom\u00e9ny spolo\u010dnosti bez autoriz\u00e1cie.<\/strong>T\u00fdm sa zabr\u00e1ni priamemu vyd\u00e1vaniu sa za niekoho in\u00e9ho a ochr\u00e1ni sa dobr\u00e9 meno zna\u010dky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tieto technol\u00f3gie maj\u00fa z\u00e1sadn\u00fd v\u00fdznam pre budovanie bezpe\u010dnej\u0161ieho digit\u00e1lneho prostredia. Bez nich m\u00f4\u017eu \u00fato\u010dn\u00edci \u013eahko zneu\u017ei\u0165 d\u00f4veru v zna\u010dku a oklama\u0165 zamestnancov, z\u00e1kazn\u00edkov alebo partnerov.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>MasterBase\u00ae a zabezpe\u010denie e-mailu<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nke <strong>MasterBase\u00ae<\/strong>Ch\u00e1peme, \u017ee overovanie e-mailov je nevyhnutn\u00e9 na ochranu na\u0161ich z\u00e1kazn\u00edkov pred \u00fatokmi a na zlep\u0161enie doru\u010dite\u013enosti ich kampan\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 <strong>Od v\u0161etk\u00fdch na\u0161ich z\u00e1kazn\u00edkov vy\u017eadujeme spr\u00e1vnu konfigur\u00e1ciu SPF, DKIM a DMARC.<\/strong> pred odoslan\u00edm, \u010d\u00edm sa zabezpe\u010d\u00ed, \u017ee va\u0161e e-maily s\u00fa legit\u00edmne a pr\u00eddu do schr\u00e1nky.<br>\u2714 <strong>Poskytujeme podrobn\u00fa podporu a poradenstvo<\/strong> pom\u00f4c\u0165 na\u0161im z\u00e1kazn\u00edkom jednoducho konfigurova\u0165 tieto protokoly.<br>\u2714 <strong>Neust\u00e1le monitorujeme pokusy o phishing.<\/strong> posilni\u0165 bezpe\u010dnos\u0165 a zabr\u00e1ni\u0165 podvodom.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ak ste z\u00e1kazn\u00edkom spolo\u010dnosti MasterBase\u00ae, kontaktujte svojho <strong>Mana\u017e\u00e9r pre \u00faspech z\u00e1kazn\u00edkov<\/strong> aby ste zaistili, \u017ee va\u0161a dom\u00e9na je spr\u00e1vne overen\u00e1 a chr\u00e1nen\u00e1.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Osved\u010den\u00e9 postupy na ochranu prie\u010dinka doru\u010denej po\u0161ty<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Okrem overovania m\u00f4\u017eete prija\u0165 aj \u010fal\u0161ie opatrenia, aby ste sa nestali obe\u0165ou e-mailov\u00fdch \u00fatokov:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Neotv\u00e1rajte e-maily od nezn\u00e1mych odosielate\u013eov.<\/strong><br>\ud83d\udd39 <strong>Pred kliknut\u00edm v\u017edy skontrolujte odkazy.<\/strong><br>\ud83d\udd39 <strong>Povo\u013ete viacfaktorov\u00e9 overovanie (MFA) na v\u0161etk\u00fdch svojich \u00fa\u010dtoch.<\/strong><br>\ud83d\udd39 <strong>Vy\u0161ko\u013ete svojich zamestnancov v odha\u013eovan\u00ed phishingu.<\/strong><br>\ud83d\udd39 <strong>Pou\u017e\u00edvajte pokro\u010dil\u00e9 bezpe\u010dnostn\u00e9 rie\u0161enia na filtrovanie \u0161kodliv\u00fdch e-mailov.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Z\u00e1ver<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E-mail je st\u00e1le jedn\u00fdm z hlavn\u00fdch vektorov \u00fatoku v oblasti kybernetickej bezpe\u010dnosti, ale <strong>s pokro\u010dil\u00fdm overovan\u00edm a spr\u00e1vnymi bezpe\u010dnostn\u00fdmi postupmi.<\/strong>mo\u017eno minimalizova\u0165 rizik\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF, DKIM a DMARC nielen chr\u00e1nia pred podvodmi a kr\u00e1de\u017eami identity, ale aj <strong>zlep\u0161i\u0165 reput\u00e1ciu a doru\u010dite\u013enos\u0165 legit\u00edmnych z\u00e1sielok.<\/strong>. Na str\u00e1nke <strong>MasterBase\u00ae, zabezpe\u010dujeme, aby ka\u017ed\u00fd odoslan\u00fd e-mail sp\u013a\u0148al tieto normy<\/strong>Zaru\u010dujeme bezpe\u010dnos\u0165 a \u00fa\u010dinnos\u0165 kampan\u00ed na\u0161ich klientov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nedovo\u013ete kyberzlo\u010dincom, aby prevzali kontrolu nad va\u0161ou po\u0161tovou schr\u00e1nkou. <strong>Chr\u00e1\u0148te svoj e-mail pomocou pokro\u010dil\u00e9ho overovania a posilnite bezpe\u010dnos\u0165 svojej spolo\u010dnosti.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><a href=\"https:\/\/masterbase.com\/sk\/es\/es\/laboratoria-lp-mba\/\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"220\" data-attachment-id=\"20466\" data-permalink=\"https:\/\/masterbase.com\/sk\/mb\/labs\/\" data-orig-file=\"https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?fit=1280%2C351&amp;ssl=1\" data-orig-size=\"1280,351\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"MB Labs\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?fit=800%2C220&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/masterbase.com\/es\/es\/es\/wp-content\/uploads\/2025\/01\/labs-1024x281.png?resize=800%2C220&#038;ssl=1\" alt=\"MB Labs\" class=\"wp-image-20466\" srcset=\"https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?resize=1024%2C281&amp;ssl=1 1024w, https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?resize=300%2C82&amp;ssl=1 300w, https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?resize=768%2C211&amp;ssl=1 768w, https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?resize=18%2C5&amp;ssl=1 18w, https:\/\/i0.wp.com\/masterbase.com\/wp-content\/uploads\/2025\/01\/labs.png?w=1280&amp;ssl=1 1280w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>E-mail je st\u00e1le jedn\u00fdm z hlavn\u00fdch komunika\u010dn\u00fdch kan\u00e1lov vo firm\u00e1ch, preto je ve\u013emi d\u00f4le\u017eit\u00e9 zabezpe\u010di\u0165 jeho bezpe\u010dnos\u0165. 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