diff --git a/thesis/02_concept.tex b/thesis/02_concept.tex
index 977853f..3cded3d 100644
--- a/thesis/02_concept.tex
+++ b/thesis/02_concept.tex
@@ -152,12 +152,16 @@ Since TCG published its documents, several IT security teams investigated concep
 	\label{fig:daa-attestation}
 \end{figure}
 
+\section{Trusted Boot}
+A boot process of modern platforms consists of several steps until the Operating System is loaded and controls the platform.
+First, the EFI firmware initializes the platform hardware and
+
 \section{Integrity Measurements}
 Extend the Chain of Trust beyond the boot process.
 The Kernel can measure many different types of Resources.
 What is a useful set of measurements
 
-\section{Verify Trust (DA and DAA)}
+\section{Verify Trust with DAA}
 
 \subsection{Definitions}
 For the definition of the algorithm, some notations and definitions are summarized in the following.
diff --git a/thesis/MAIN.pdf b/thesis/MAIN.pdf
index 429683d..1583c75 100644
Binary files a/thesis/MAIN.pdf and b/thesis/MAIN.pdf differ
diff --git a/thesis/literature.bib b/thesis/literature.bib
index 37df685..de1a652 100644
--- a/thesis/literature.bib
+++ b/thesis/literature.bib
@@ -134,6 +134,15 @@
 	urldate = {2020-02-27}
 }
 
+@online{tevora-secureboot,
+	author = {Tevora},
+	year = {2019},
+	month = {06},
+	title = {Configuring Secure Boot + TPM 2},
+	url = {https://threat.tevora.com/secure-boot-tpm-2/},
+	urldate = {2020-06-19}
+}
+
 @online{pornkitprasan19-secureboot,
 	author = {Pawit Pornkitprasan},
 	year = {2019},