You are linking to a page. At the bottom of that page, there is a link called "Hacker News thread" pointing to https://news.ycombinator.com/item?id=7277128 http

You are linking to a page. At the bottom of that page, there is a link called "Hacker News thread" pointing to https://news.ycombinator.com/item?id=7277128 https://news.ycombinator.com/item?id=7277128 Duplicates on HN are annoying, but searching the site every time can be troublesome, so I totally understand when sometimes someone posts a link that is already on the front page. However, since Schneier linked to the original post himself, I am puzzled — how did you not see that? I am genuinely curious.