{"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":"e-mail-cybersikkerhed-hvordan-man-undgar-phishing-angreb-malware-og-svindel-med-avanceret-autentificering","status":"publish","type":"post","link":"https:\/\/masterbase.com\/da\/ciberseguridad-en-correos-electronicos-como-evitar-ataques-de-phishing-malware-y-fraudes-con-autenticacion-avanzada\/masterbase\/","title":{"rendered":"Cybersikkerhed i e-mails: S\u00e5dan forhindrer du phishing-angreb, malware og svindel med avanceret autentificering"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Mere end 90% af alle cyberangreb starter med en ondsindet e-mail, enten via phishing, malware eller m\u00e5lrettet svindel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Men der er en m\u00e5de at styrke e-mailsikkerheden p\u00e5 og minimere disse risici: <strong>avanceret autentificering<\/strong>. Protokoller som f.eks. <strong>SPF, DKIM og DMARC<\/strong> De beskytter virksomheder mod svindel og phishing og forbedrer ogs\u00e5 leveringsevnen for legitime e-mails, s\u00e5 de n\u00e5r frem til indbakken og ikke til spammappen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I denne artikel vil vi udforske <strong>de st\u00f8rste trusler i e-mail, den centrale rolle, som autentificering spiller, og hvordan MasterBase\u00ae arbejder for at sikre sikkerhed og effektivitet i forretningsmails<\/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>De mest almindelige e-mail-trusler<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udce9<\/strong><strong> 1. Phishing: det mest almindelige svindelnummer<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Phishing er en angrebsmetode, hvor cyberkriminelle udgiver sig for at v\u00e6re p\u00e5lidelige virksomheder eller personer for at narre brugere til at stj\u00e6le legitimationsoplysninger eller f\u00f8lsomme data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> En e-mail, der ser ud til at komme fra en bank og beder dig om at opdatere dine loginoplysninger med et falsk link.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83c\udfaf<\/strong><strong> 2. Spear Phishing: m\u00e5lrettede angreb<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">I mods\u00e6tning til masse-phishing er spear-phishing rettet mod specifikke personer og bruger personlige oplysninger til at g\u00f8re bedraget mere overbevisende.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> En medarbejder modtager en falsk e-mail, hvor den administrerende direkt\u00f8r angiveligt beder om hurtige overf\u00f8rsler eller adgang til fortrolige oplysninger.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udcbc<\/strong><strong> 3. Business Email Compromise (BEC): Virksomhedssvindel<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Angribere kompromitterer en legitim virksomheds e-mailkonto og bruger den til at sende falske instruktioner til medarbejdere eller leverand\u00f8rer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> En cyberkriminel udgiver sig for at v\u00e6re fra \u00f8konomiafdelingen og sender en e-mail med anmodning om betaling til en falsk konto.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83e\udda0<\/strong><strong> 4. Malware og ransomware i vedh\u00e6ftede filer<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mange angreb starter med en tilsyneladende harml\u00f8s vedh\u00e6ftet fil, som, n\u00e5r den \u00e5bnes, installerer malware eller ransomware p\u00e5 offerets system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> En medarbejder modtager en Word-fil med ondsindede makroer, som installerer ransomware p\u00e5 virksomhedens netv\u00e6rk.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Den centrale rolle for SPF, DKIM og DMARC i e-mail-sikkerhed<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For at mindske disse risici er det vigtigt at <strong>autentificere e-mails og forhindre tredjeparter i at forfalske virksomhedsdom\u00e6ner<\/strong>. Det er her, tre vigtige protokoller kommer i spil:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39<\/strong><strong> SPF (Sender Policy Framework): Det f\u00f8rste tillidsfilter<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF forhindrer cyberkriminelle i at sende e-mails fra et falsk dom\u00e6ne ved at kontrollere, hvilke servere der er autoriseret til at sende e-mails p\u00e5 vegne af en virksomhed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> Hvis du modtager en e-mail fra din banks dom\u00e6ne, kontrollerer SPF, om den rent faktisk er sendt fra en autoriseret server.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39<\/strong><strong> DKIM (DomainKeys Identified Mail): Den digitale signatur for e-mail<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM tilf\u00f8jer et lag af sikkerhed ved at vedh\u00e6fte en unik digital signatur til hver e-mail, der sendes, hvilket sikrer, at meddelelsen ikke er blevet \u00e6ndret undervejs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> Hvis en hacker fors\u00f8ger at \u00e6ndre en e-mail p\u00e5 vej til din indbakke, vil DKIM opdage og blokere det.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udd39<\/strong><strong> DMARC (Domain-based Message Authentication, Reporting &amp; Conformance): Den sidste forsvarslinje<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DMARC er afh\u00e6ngig af SPF og DKIM for at beslutte, hvordan mist\u00e6nkelige e-mails skal behandles og forhindre phishing- og spoofing-angreb. Det giver ogs\u00e5 rapporter om phishing-fors\u00f8g.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>Eksempel:<\/strong> Hvis en angriber fors\u00f8ger at sende falske e-mails fra et virksomhedsdom\u00e6ne, kan DMARC afvise disse e-mails eller markere dem som 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>Eksempel p\u00e5 spoofing af e-mailadresse<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Uden ordentlig beskyttelse, s\u00e5som SPF, DKIM og DMARC, er det ekstremt nemt at forfalske en e-mail og lade, som om den kommer fra en legitim og trov\u00e6rdig virksomhed.<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En dokumenteret sag viser f\u00f8lgende:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Der blev identificeret en velkendt rumfartsvirksomhed (Dassault-Aviation), som ikke havde konfigureret DMARC-protokollen.<\/li>\n\n\n\n<li>Det var muligt offentligt at finde ud af, hvem der var CEO, og hvad det s\u00e6dvanlige format for virksomheders e-mailadresser var.<\/li>\n\n\n\n<li>Med disse oplysninger blev der genereret en falsk e-mail fra en adresse, der efterlignede et medlem af forretningsudvalget. Beskeden blev sendt og modtaget med succes uden at blive blokeret eller markeret som mist\u00e6nkelig.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kan SPF, DKIM og DMARC helt forhindre phishing? Ikke helt.<\/strong><br>Det er stadig muligt at snyde brugerne ved at bruge visuelt lignende adresser (f.eks. customer-amazon.com, Linkedln.com med et lille \"L\" i stedet for et \"i\", eller service-dashlane.com). Disse variationer er sv\u00e6re at opdage med det blotte \u00f8je.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Men.., <strong>SPF, DKIM og DMARC forhindrer angribere i at sende mails ved hj\u00e6lp af en virksomheds rigtige dom\u00e6ne uden tilladelse.<\/strong>P\u00e5 den m\u00e5de undg\u00e5r man direkte efterligning og beskytter brandets omd\u00f8mme.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Disse teknologier er afg\u00f8rende for at opbygge et mere sikkert digitalt milj\u00f8. Uden dem kan angribere nemt udnytte tilliden til et brand til at bedrage medarbejdere, kunder eller partnere.<\/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 og e-mail-sikkerhed<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">P\u00e5 <strong>MasterBase\u00ae<\/strong>Vi forst\u00e5r, at e-mail-godkendelse er afg\u00f8rende for at beskytte vores kunder mod angreb og forbedre deres kampagners leveringsevne.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2714 <strong>Vi kr\u00e6ver, at alle vores kunder konfigurerer SPF, DKIM og DMARC korrekt.<\/strong> f\u00f8r du sender, s\u00e5 du er sikker p\u00e5, at dine e-mails er legitime og n\u00e5r frem til indbakken.<br>\u2714 <strong>Vi giver detaljeret st\u00f8tte og vejledning<\/strong> for at hj\u00e6lpe vores kunder med at konfigurere disse protokoller p\u00e5 en enkel m\u00e5de.<br>\u2714 <strong>Vi overv\u00e5ger l\u00f8bende phishing-fors\u00f8g.<\/strong> for at styrke sikkerheden og forhindre svindel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hvis du er kunde hos MasterBase\u00ae, bedes du kontakte din <strong>Customer Success Manager<\/strong> for at sikre, at dit dom\u00e6ne er korrekt godkendt og beskyttet.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Bedste praksis for at beskytte din indbakke<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ud over autentificering er der yderligere foranstaltninger, du kan tr\u00e6ffe for at undg\u00e5 at blive offer for e-mailangreb:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udd39 <strong>\u00c5bn ikke e-mails fra ukendte afsendere.<\/strong><br>\ud83d\udd39 <strong>Tjek altid links, f\u00f8r du klikker.<\/strong><br>\ud83d\udd39 <strong>Aktiv\u00e9r multifaktorgodkendelse (MFA) p\u00e5 alle dine konti.<\/strong><br>\ud83d\udd39 <strong>Tr\u00e6n dine medarbejdere i at opdage phishing.<\/strong><br>\ud83d\udd39 <strong>Brug avancerede sikkerhedsl\u00f8sninger til at filtrere ondsindede e-mails.<\/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>Konklusion<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E-mail er stadig en af de vigtigste angrebsvektorer inden for cybersikkerhed, men <strong>med avanceret autentificering og god sikkerhedspraksis<\/strong>risici kan minimeres.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SPF, DKIM og DMARC beskytter ikke kun mod svindel og identitetstyveri, de beskytter ogs\u00e5 <strong>forbedre omd\u00f8mme og leveringsevne for legitime forsendelser<\/strong>. P\u00e5 <strong>MasterBase\u00ae sikrer vi, at hver eneste e-mail, der sendes, opfylder disse standarder<\/strong>Vi garanterer sikkerheden og effektiviteten af vores kunders kampagner.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lad ikke cyberkriminelle overtage kontrollen med din indbakke. <strong>Beskyt din e-mail med avanceret godkendelse, og styrk din virksomheds sikkerhed.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><a href=\"https:\/\/masterbase.com\/da\/es\/es\/lp-mba-laboratorier\/\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"220\" data-attachment-id=\"20466\" data-permalink=\"https:\/\/masterbase.com\/da\/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 er fortsat en af de vigtigste kommunikationskanaler i virksomheder, og derfor er det af afg\u00f8rende betydning at s\u00f8rge for sikkerheden. <\/p>","protected":false},"author":239642484,"featured_media":21869,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[1391],"tags":[],"class_list":["post-21851","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciberseguridad"],"yoast_head":"<!-- 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