New Large Email Security Gap Analysis Shows a Massive 15% Failure Rate

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We thought it was bad when we saw Cyren’s recent analysis that 10.5% of bad emails made it through the filters. 

It could even be worse than that.

“Mimecast’s latest ESRA (email security risk assessment) report found more than 14,277,163 pieces of spam, 9,992 emails containing dangerous file types, and 849 unknown emails with malware attachments — all missed by the incumbent providers and delivered to users’ inboxes.

Overall, the Mimecast security service determined that more than 14 million of the more than 95 million emails, or 15%, were in fact “bad” or “likely bad.”

In other words, the overall false negative rate in aggregate for the incumbent security systems that were tested was 15% of all emails inspected by Mimecast.

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