diff --git a/src/devices/tech/security/overview/acknowledgements.jd b/src/devices/tech/security/overview/acknowledgements.jd
index 35e8cbc..e113420 100644
--- a/src/devices/tech/security/overview/acknowledgements.jd
+++ b/src/devices/tech/security/overview/acknowledgements.jd
@@ -32,7 +32,7 @@
 for the <a href="https://www.google.com/about/appsecurity/patch-rewards/">Patch
 Rewards</a> program.</p>
 
-<h2>2015</h2>
+<h2 id=2015>2015</h2>
 
 <div style="LINE-HEIGHT:25px;">
 
@@ -53,7 +53,7 @@
 
 </div>
 
-<h2>2014</h2>
+<h2 id=2014>2014</h2>
 
 <div style="LINE-HEIGHT:25px;">
 <p>Jeff Forristal of <a href="http://www.bluebox.com/blog/">Bluebox
@@ -195,7 +195,7 @@
 
 </div>
 
-<h2>2013</h2>
+<h2 id=2013>2013</h2>
 
 <div style="LINE-HEIGHT:25px;">
 
@@ -271,7 +271,7 @@
 <p>Kan Yuan</p>
 
 </div>
-<h2>2012</h2>
+<h2 id=2012>2012</h2>
 
 <div style="LINE-HEIGHT:25px;">
 
@@ -297,8 +297,7 @@
 
 <p><a href="http://thejh.net/">Jann Horn</a></p>
 
-<p><a href="http://web.ict.kth.se/~rbbo/ussdvul.html">Ravishankar
-Borgaonkar</a> of TU Berlin
+<p>Ravishankar Borgaonkar of TU Berlin
 (<a href="https://twitter.com/raviborgaonkar">@raviborgaonkar</a>)</p>
 
 <p><a href="http://roeehay.blogspot.com/">Roee Hay</a>
@@ -309,7 +308,7 @@
 
 </div>
 
-<h2>2011</h2>
+<h2 id=2011>2011</h2>
 
 <div style="LINE-HEIGHT:25px;">
 
@@ -317,7 +316,7 @@
 
 </div>
 
-<h2>2009</h2>
+<h2 id=2009>2009</h2>
 
 <div style="LINE-HEIGHT:25px;">