Phew, I thought they were talking about email spam coming back. This article is a bit clickbaity, and sorta tricks you into continuing to read until you figure

Phew, I thought they were talking about email spam coming back. This article is a bit clickbaity, and sorta tricks you into continuing to read until you figure out it's talking about social media, telephone, and SMS spam (by giving examples of people making progress against email spam, talking about email spam being a thing of the past). As a small email system operator, I have seen spam fluctuate greatly. In my case it accounts for around 99% of connections, and 95% of successful connections (valid reverse dns, working STARTTLS), but today it only accounted for about 10% of successful connections. Miraculously, I have seen penny stock spam in 2017.