diff --git a/README.md b/README.md
index ae7ef8e95..7671f785b 100644
--- a/README.md
+++ b/README.md
@@ -111,6 +111,13 @@ before opening a new issue.
 
 Please take a look at the changelog in our [Photobooth Wiki](https://github.com/andi34/photobooth/wiki/changelog).
 
+### :warning: Security advice
+
+Photobooth is not hardened against any kind of *targeted* attacks.
+It uses user defined commands for tasks like taking photos and is allowed to replace its own files for easy updating.
+Because of this it's not advised to operate Photobooth in an untrusted network and 
+**you should absolutely not make Photobooth accessible through the internet without heavy modifications!**
+
 ### :copyright: License
 
 Photobooth source is licensed under the MIT license.  
diff --git a/src/sass/welcome.scss b/src/sass/welcome.scss
index 3099f675d..c839357b6 100644
--- a/src/sass/welcome.scss
+++ b/src/sass/welcome.scss
@@ -32,3 +32,10 @@ body {
     text-decoration: underline;
   }
 }
+
+.security-advice {
+  color: #000000;
+  background-color: #FFFF00;
+  border: 3px #000000;
+  border-radius: 25px;
+}
diff --git a/welcome.php b/welcome.php
index 20632ee67..320fec17d 100644
--- a/welcome.php
+++ b/welcome.php
@@ -50,7 +50,7 @@
 		<p></p>
 		<p>Photobooth was initally developped by Andre Rinas especially to run on a Raspberry Pi.<br>
 		In 2019 Andreas Blaesius picked up the work and continued to work on the source.</p>
-		<p>With the help of the community Photobooth growed to a powerfull Photobooth software with a lot of features and possibilities.<br>
+		<p>With the help of the community Photobooth grew to a powerfull Photobooth software with a lot of features and possibilities.<br>
 		By a lot of features, we mean a lot (!!!) and you might have some questions - now or later. You can find a lot of useful information inside
 		the <a href="https://github.com/andi34/photobooth/wiki" target="_blank" rel="noopener noreferrer">Photobooth-Wiki</a> or at the <a href="https://t.me/PhotoboothGroup" target="_blank" rel="noopener noreferrer">Telegram group</a>.</p>
 		<p></p>
@@ -69,6 +69,12 @@
 		<p>You are missing some translation or your language isn't supported yet? Don't worry! You can request new language support at <a href="https://github.com/andi34/photobooth/issues" target="_blank" rel="noopener noreferrer">GitHub</a>,
 		you can translate Photobooth at <a href="https://crowdin.com/project/photobooth" target="_blank" rel="noopener noreferrer">Crowdin</a>.</p>
 		<p></p>
+        <p class="security-advice"><b>Security advice</b><br><br>
+        Photobooth is not hardened against any kind of <i>targeted</i> attacks.<br>
+        It uses user defined commands for tasks like taking photos and is allowed to replace its own files for easy updating.<br>
+        Because of this it's not advised to operate Photobooth in an untrusted network and<br>
+        <b>you should absolutely not make Photobooth accessible through the internet without heavy modifications!</b></p>
+        <p></p>
 		<p>Thanks for the reading! Enjoy your Photobooth!</p>
 		<p><a href="./" class="btn btn--flex">Start Photobooth</a></p>
 	</div>