The latest BSD Weekly https://bsdweekly.com/issues/245 features "Eighteen Years of Greytrapping ..." (https://nxdomain.no/~peter/eighteen_years_of_greytrapping.html and https://bsdly.blogspot.com/2025/08/eighteen-years-of-greytrapping-is.html - a warmup to #bookofpf 4th ed https://nostarch.com/book-of-pf-4th-edition) #openbsd #freebsd #security #mail #spam #hacking #cybercrime @nostarch