diff --git a/free-programming-books.md b/free-programming-books.md
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@@ -416,6 +416,7 @@
 
 ####Security
 * [Handbook of Applied Cryptography](http://cacr.uwaterloo.ca/hac/index.html)
+* [How to deal with Passwords](https://github.com/MHM5000/pass)
 * [Intrusion Detection Systems with Snort](http://ptgmedia.pearsoncmg.com/images/0131407333/downloads/0131407333.pdf)
 * [OWASP Top 10 for .NET Developers](http://www.troyhunt.com/2011/12/free-ebook-owasp-top-10-for-net.html)
 * [Security Engineering](http://www.cl.cam.ac.uk/~rja14/book.html)