This blog post was authored by Jaeson Schultz.

For the past five years we have enjoyed a relatively calm period with respect to spam volumes. Back at the turn of the decade the world was experiencing record-high volumes of spam. However, with the evolution of new anti-spam technologies, combined with some high-profile takedowns of spam-related botnets, voluminous and indiscriminate spam attacks fell precipitously in popularity with spammers. Subsequently, having lower volumes of spam to contend with, anti-spam systems had the luxury of dedicating more computer processing resources to analyzing fewer messages for email-based threats. But, as the fashion industry adage goes, "everything old is new again." Spam volumes are back on the rise.

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