>
How does one /accidentally/ harvest email addresses and /accidentally/
> add them to a Mailchimp list and /accidentally/ send emails with full
> header personalization?
All mass-mail systems I'm aware of offer to scrape your own contacts when you first sign up. Anyone who has ever started or replied to a Nanog thread is in everyone else's contact list, including the list address itself.
I don't think the list was scraped, Ben's contacts were. One implies malice, the other, a lack of foresight.
Ben is active enough here to know one would be crucified and/or humiliated for scraping the list, both were the case here.
-Matt