ESRA is Mimecast’s ongoing Email Security Risk Assessment quarterly analysis. Working with 37 organizations across 20 different industries, Mimecast compares the email threats it detects to those detected by the organizations’ incumbent email security technologies. The results provide two major sets of statistics: the volume of threats that go undetected by the incumbent technologies; and the sheer size of the email threat.
The latest report (PDF) covers more than 142 million emails received by almost 261,924 users. The incumbent email security was Office 365 and Proofpoint.
ESRA’s analysis shows that a total of more than 19 million spam emails; 13,176 emails containing dangerous file types; and 15,656 malware attachments were missed by the incumbent security and delivered to users’ inboxes.
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