diff --git a/content/decentral_messaging/_index.md b/content/decentral_messaging/_index.md
index 442a430..4d8dfa6 100644
--- a/content/decentral_messaging/_index.md
+++ b/content/decentral_messaging/_index.md
@@ -22,6 +22,14 @@ outputs:
 - Ausblick
 - Alternativen
 
+---
+## Dezentralität
+- vs. **Zentralität**
+
+Leider von den meisten Messenger verwendet
+
+<img src="./img/central.svg" style="border: none; background:transparent;" />
+
 ---
 
 ## Dezentralität
diff --git a/static/decentral_messaging/img/central.svg b/static/decentral_messaging/img/central.svg
new file mode 100644
index 0000000..4dc6bb8
--- /dev/null
+++ b/static/decentral_messaging/img/central.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" height="200" width="185">
+  <circle  cx="62"  cy="50" r="15" fill="white" />
+  <circle cx="125"  cy="50" r="15" fill="white" />
+  <circle  cx="25" cy="100" r="15" fill="white" />
+  <circle  cx="62" cy="150" r="15" fill="white" />
+  <circle cx="125" cy="150" r="15" fill="white" />
+  <circle cx="162" cy="100" r="15" fill="white" />
+
+  <rect   x="80" y="85" width="30" height="30" fill="white" />
+
+  <line    x1="62"  y1="50"   x2="95" y2="100" stroke="white"/>
+  <line   x1="125"  y1="50"   x2="92" y2="100" stroke="white"/>
+  <line    x1="25" y1="100"   x2="95" y2="100" stroke="white"/>
+  <line    x1="62" y1="150"   x2="95" y2="100" stroke="white"/>
+  <line   x1="125" y1="150"   x2="95" y2="100" stroke="white"/>
+  <line   x1="162" y1="100"   x2="95" y2="100" stroke="white"/>
+</svg>