It feels to me like someone who has only just noticed that the majority of internet traffic is nowadays malicious.

In about 2002 I set up my first domestic mailserver, and was shocked (and frightened) at the proportion of traffic that was malicious. Then I started digging into other system logs. In those days most malicious traffic was from Eastern Europe. I've run honeypots, for entertainment. It was engaging for a while. Eventually I realised that running a home honeypot was a waste of effort, and I just hardened my systems and instituted a bit of monitoring.