diff --git a/4.1-Extensions.md b/4.1-Extensions.md
index 1a87e01..5c27944 100644
--- a/4.1-Extensions.md
+++ b/4.1-Extensions.md
@@ -48,8 +48,6 @@ This list covers privacy and security related extensions only. While we believe
 
 These extensions will not mask or alter any data sent or received, but may be useful depending on your needs
 
-* [Behave](https://addons.mozilla.org/firefox/addon/behave/) | <sup>[github](https://github.com/mindedsecurity/behave)</sup>
-  - Monitors and warns if a web page performs DNS Rebinding attacks to Private IPs, accesses Private IPs, or does Port Scans
 * [mozlz4-edit](https://addons.mozilla.org/firefox/addon/mozlz4-edit/) | <sup>[github](https://github.com/serj-kzv/mozlz4-edit)</sup>
   - Inspect and/or edit `*.lz4`, `*.mozlz4`, `*.jsonlz4`, `*.baklz4` and `*.json` files within FF
 * [CRX Viewer](https://addons.mozilla.org/firefox/addon/crxviewer/) | <sup>[github](https://github.com/Rob--W/crxviewer)</sup>