diff --git a/docs/workshop/1-passsive-ddos/d4-passive-ddos.tex b/docs/workshop/1-passsive-ddos/d4-passive-ddos.tex
index 755627d..f39e730 100644
--- a/docs/workshop/1-passsive-ddos/d4-passive-ddos.tex
+++ b/docs/workshop/1-passsive-ddos/d4-passive-ddos.tex
@@ -15,7 +15,7 @@
 \definecolor{textcolor}{RGB}{85, 87, 83}
 \title{D4 Project}
 \subtitle{Passive DDoS identification techniques}
-\author{TEAM CIRCL}
+\author{Team CIRCL}
 \titlegraphic{\includegraphics[scale=0.20]{d4-logo.pdf}}
 \institute{Team CIRCL \\ \url{https://www.d4-project.org/}}
 \date{20190329}
@@ -90,7 +90,7 @@ Fill up state connection state table of the victim
     \item Assess the state of an infrastructure under denial of service attack
     \begin{itemize}
         \item Detect failure/addition of  intermediate network equipments, firewalls, proxy servers etc
-        \item Detect DDOS mitigation devices
+        \item Detect DDoS mitigation devices
     \end{itemize}
     \item Create probabilistic models of denial of service attacks
 \end{itemize}
diff --git a/docs/workshop/3-pibs/d4-logo.pdf b/docs/workshop/3-pibs/d4-logo.pdf
new file mode 100644
index 0000000..f6cfdbf
Binary files /dev/null and b/docs/workshop/3-pibs/d4-logo.pdf differ