The guy says he’s been able to find the email address I used to comment on some blogs, just by looking up the relevant web pages on Wayback Machine or similar tools.
He alleges such tools allow hackers to see “behind” the Web page, so to speak, and extract the email address which is only supposed to be accessible to the blog author.
I’ve never heard of such a hack. I think he’s just trolling. Is that even possible ? Have you ever heard of anything like that ?