From your provided information and the current comments I would guess it is a spam campaign that targets the audience of the website it scraped. One could flag

From your provided information and the current comments I would guess it is a spam campaign that targets the audience of the website it scraped. One could flag it as spam or if so inclined, create a free account on SpamCop [1] and submit the headers. Some smaller sites directly use SpamCop, UceProtect and Spamhaus and many commercial products us some of their data feeds behind the scenes to assign spam scores. It may be useful to create a throw-away email alias for their public profile and further obfuscate it in a manor that much of the HN crowd could easily decipher. e.g. echo -n 'email base64: ';echo -n 'some.hn-specific.address@some.tld' | base64 -w0;echo email base64: c29tZS5obi1zcGVjaWZpYy5hZGRyZXNzQHNvbWUudGxk [1] - https://www.spamcop.net/anonsignup.shtml https://www.spamcop.net/anonsignup.shtml