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Mailsploit Bypasses DMARC And Lets Attackers Send Spoofed Phishing Emails on Over 33 Email Clients

Mailsploit

Our friends at Bleepingcomputer reported on something that should cause anyone concern.

German security researcher Sabri Haddouche has discovered a set of vulnerabilities that he collectively refers to as Mailsploit, and which allow an attacker to spoof email identities, and in some cases, run malicious code on the user's computer.

While the remote code execution part of Mailsploit is worrisome, the real issue is the email spoofing attack that circumvents all modern anti-spoofing protection mechanisms such as DMARC (DKIM/SPF) or various spam filters.

This allows miscreants to send emails with spoofed identities that both users and email servers have a hard time detecting as fakes. This, in turn, makes phishing attacks and malware-laden emails much harder to spot.

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