Ask HN: Can you help me find a lost HN link?

Hello, all. A while (few months, at least) back, there was a cool link to a github page with a bunch of files for testing secure file uploads. I've searched my history as well as the web, using every trick I can think of, and I have been completely unable to track it down again. I thought I had it bookmarked, but apparently not. Can anyone with a better memory/bookmarking scheme help me track them down again? Thanks!