6.4 Billion Fake Emails Sent Each Day

New data on email threats in the first half of 2018 shows that some 6.4 billion emails sent each day worldwide are fake.

According to email security firm Valimail, the US is the No. 1 source of fake email, sending some 120 million phony messages in the second quarter of 2018. Valimail, an email authentication vendor, gathered data from emails that spoof the domain of the email sender. The data is based on both Valimail's own analysis of billions of email authentication requests to its DMARC service, as well as analysis of more than 3 million DMARC and SPF records.

DMARC (Domain-based Message Authentication, Reporting & Conformance) and SPF (Sender Policy Framework) are email authentication standards. 

According to Valimail, 96.2% of the emails its DMARC-based email gateways inspected in the first half of 2018 were legitimate, while 2.2% were not, and 1.5% were from legit sources but failed to follow DMARC. 

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