diff --git a/README.md b/README.md
index 0f64ae9..e135222 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,8 @@
 - [Linksys WRT54G Ultimate Hacking](https://www.amazon.com/Linksys-WRT54G-Ultimate-Hacking-Asadoorian/dp/1597491667)
 - [Linux Binary Analysis](https://www.packtpub.com/networking-and-servers/learning-linux-binary-analysis)
 - [Firmware](https://www.amazon.com/Firmware-Handbook-Embedded-Technology/dp/075067606X)
+- [Hardware Hacking Handbook](https://books.google.co.in/books?id=DEqatAEACAAJ&source=gbs_navlinks_s)
+- [inside radio attack and defense](https://books.google.co.in/books?id=71NSDwAAQBAJ&printsec=copyright&redir_esc=y#v=onepage&q&f=false)
 
 ### ***Blogs for iotpentest***