diff --git a/exploit_development/README.md b/exploit_development/README.md
index 038619e..2a3b8bc 100644
--- a/exploit_development/README.md
+++ b/exploit_development/README.md
@@ -127,10 +127,7 @@ The following are some of the most popular reverse engineering tools. HOWEVER! G
 + [Kernel-mode Payloads on Windows in uninformed](http://www.uninformed.org/?v=3&a=4&t=pdf)
 + [Exploiting 802.11 Wireless Driver Vulnerabilities on Windows](http://www.uninformed.org/?v=6&a=2&t=pdf)
 + [Heap Feng Shui in JavaScript](http://www.blackhat.com/presentations/bh-europe-07/Sotirov/Presentation/bh-eu-07-sotirov-apr19.pdf) by Alexander sotirov [2007]
-+ [Understanding and bypassing Windows Heap Protection](http://kkamagui.springnote.com/pages/1350732/attachments/579350) - by Nicolas Waisman [2007]
-+ [Heaps About Heaps](http://www.insomniasec.com/publications/Heaps_About_Heaps.ppt) - by Brett moore [2008]
 + [Bypassing browser memory protections in Windows Vista](http://taossa.com/archive/bh08sotirovdowd.pdf) - by Mark Dowd and Alex Sotirov [2008]
-+ [Attacking the Vista Heap](http://www.ruxcon.org.au/files/2008/hawkes_ruxcon.pdf) - by ben hawkes [2008]
 + [Return oriented programming Exploitation without Code Injection](http://cseweb.ucsd.edu/~hovav/dist/blackhat08.pdf) - by Hovav Shacham  (and others ) [2008]
 + [Token Kidnapping and a super reliable exploit for windows 2k3 and 2k8](http://www.argeniss.com/research/TokenKidnapping.pdf) - by Cesar Cerrudo [2008]
 + [Defeating DEP Immunity Way](http://www.immunityinc.com/downloads/DEPLIB.pdf) - by Pablo Sole [2008]