🔒 Neues Wissen, mehr Sicherheit! 🎓
Ich habe die Masterclass „DomainSecurity“ der InterNexum GmbH erfolgreich absolviert! 🎉
📌 Was wurde gelernt?
✔ Grundlagen Domainmanagement & DNS
✔ E-Mail-Authentisierung (SPF, DKIM, DMARC)
✔ E-Mail-Transport-Sicherheit (MTA-STS, TLS-RPT, DANE)
✔ DNS-Sicherheit (DNSSEC, CAA, TLSA)
✔ BIMI für vertrauenswürdige E-Mails
💡 Und das Beste?
Dieses Wissen wird bei Zempel IT Security bereits eingesetzt, um den eigenen E-Mail-Verkehr bestmöglich abzusichern – für mehr Schutz vor Phishing, Spoofing & Co.!
🚀 Sicherheit ist kein Zufall, sondern das Ergebnis von Wissen und Umsetzung.
https://zempel-itsecurity.de/home/zis-blog/33-neues-wissen,-mehr-sicherheit-bj%C3%B6rn-zempel-erfolgreich-in-domainsecurity-zertifiziert
#DomainSecurity #EmailSecurity #ZempelITSecurity #Cybersecurity #DNS #DMARC #ITSecurity #KnowledgeIsPower
About This Hashtag
#dmarc
4 posts
Last used Aug 03
#dmarc
4 posts· Last used Aug 03
Tired of DMARC checker tools that demand dashboard logins or charge per domain? We've compared 4 alternatives to help you pick the right one for your needs. Check it out: https://www.sealedmail.co.uk/resources/dmarc-checker-4-alternatives/ #DMARC
New by me: CybersecKyle Security How-To Series: Power User and Small Team, Part 2 - Email Security with SPF, DKIM, and DMARC
https://www.kylereddoch.me/blog/cyberseckyle-security-how-to-series-power-user-and-small-team-part-2-email-security-with-spf-dkim-and-dmarc/
#Cybersecurity #InfoSec #EmailSecurity #DMARC #CybersecKyleHowTo
Hey, I missed that the updated DMARC RFCs are out!
Notable:
p=reject discouraged for general user-side mailboxes, in favor of p=quarantine (and reject will effectively be treated like quarantine)Removed: pct -- replaced by t (testing mode)New: np -- policy for non-existent domainsstill v=DMARC1and more
Good commentary:
https://www.dmarctrust.com/blog/dmarcbis-rfc-9989-9990-9991
Links to the full RFCs:
https://datatracker.ietf.org/doc/html/rfc9989
https://datatracker.ietf.org/doc/html/rfc9990
https://datatracker.ietf.org/doc/html/rfc9991
Of course, it will take some time for support to ripple outward.
#DMARC
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