Add introduction to topic and research question

introduction.tex

@@ -1,4 +1,28 @@
 \chapter{Introduction}
 \label{chap:introduction}
 
+The Internet has seen an unprecedented rise in traffic over the last few years
+which is accelerating still. Due to this growth, an increasing amount of user
+data is sent over the Internet. This user data is analyzed by companies in big
+industries such as social networking, advertising, internet service providers
+and news web sites. Although many services online appear to be free for
+individual users, the companies behind them have to sustain themselves and make
+profits every year. This has led to firms working extensively with user data to
+extract meaningful information from the way users use their services. The
+collected and inferred information can then be sold to interested parties which
+allows those parties to personalize their service, yielding higher customer
+engagement and thus higher profits. The end users themselves receive the short
+end of the stick by---often unconsciously---giving away their data without
+gaining much in turn. Because the means of data collection on the Internet are
+becoming increasingly invasive and omnipresent, tools to defend against such
+privacy intrusions are developed. It is beneficial to users to know how web
+sites are tracking their customers so that they can protect themselves against
+these tracking mechanisms. The aim of this thesis is to give an overview of
+tracking methods and tools to defend oneself against them. It seeks to answer
+the underlying research question of \emph{Which stateful tracking methods are
+used to track individuals on the Internet and which countermeasures exist?}
+
+\section{Terms and Scope}
+\label{sec:terms and scope}
+