Hey! I'm David, a security engineer at the Blockchain team of Facebook, previously a security consultant for the Cryptography Services of NCC Group. I'm also the author of the Real World Cryptography book. This is my blog about cryptography and security and other related topics that I find interesting.

I got my first dogecoins today posted May 2014

Time to celebrate!

and thanks r/dogecoin for tipping me!

If you want some of my dogecoins just comment :D

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I'm writing a book!
You can already start reading it in early-access, and the first chapters are for free!