Mastering email security with DMARC, SPF and DKIM

Phishing and email spam are the biggest opportunities for hackers to enter the network. If a single user clicks on some malicious email attachment, it can compromise an entire enterprise with ransomware, cryptojacking scripts, data leakages, or privilege escalation exploits.

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Story added 14. February 2018, content source with full text you can find at link above.