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Security researchers have discovered a new technique that allows threat actors to send spoofed emails with false addresses.
They can use this technique to deliver highly targeted phishing emails, while avoiding being spotted byemail securitysolutions.
Microsoft and GMX have already addressed the issue, but some reports have claimed Cisco has decided not to.
Consequently, threat actors can still potentially smuggle emails to Cisco Secure Email instances with default configurations.
Phishing continues to be the primary attack vector for most threat actors out there.
It is omnipresent, cheap, and can be automated.
ViaTheHackerNews
