Here's a weird story. I found a PDF of an algorithms book I liked on Anna's. Not a scan, but an original PDF. It's a good book, so I decided I should buy it. B

Here's a weird story. I found a PDF of an algorithms book I liked on Anna's. Not a scan, but an original PDF. It's a good book, so I decided I should buy it. But I don't keep a physical shelf anymore. The thing is, the publisher doesn't sell the PDF! Which makes me wonder where the pirated PDF came from. Insider leak?