diff --git a/docs/SUMMARY.md b/docs/SUMMARY.md
index 50857b9a..90e3b917 100644
--- a/docs/SUMMARY.md
+++ b/docs/SUMMARY.md
@@ -24,7 +24,7 @@
     * [Line Following](/tutorials/line-following)
     * [Red Light, Green Light](/tutorials/redlight-greenlight)
     * [Object Near?](/tutorials/object-near)
-    * [Intruder Alert](/tutorials/intruder-alert)
+    * [Security Alert](/tutorials/security-alert)
 
 * [Coding](/coding)
     * [Autonomous Parking](/coding/autonomous-parking)
diff --git a/docs/examples.md b/docs/examples.md
index 7420911b..f2ab36a3 100644
--- a/docs/examples.md
+++ b/docs/examples.md
@@ -21,11 +21,11 @@ Here are some fun programs for your @boardname@!
   "imageUrl": "/static/maker/security-gadget.png"
 },
 {
-  "name": "Intruder Detector",
-  "description": "Raise the alarm when an intruder sneaks in",
-  "url":"/maker/intruder-detector",
+  "name": "Movement Detector",
+  "description": "Raise the alarm when an movement sneaks in",
+  "url":"/maker/movement-detector",
   "cardType": "example",
-  "imageUrl": "/static/maker/intruder-detector.png"
+  "imageUrl": "/static/maker/movement-detector.png"
 },
 {
   "name": "Puppet",
diff --git a/docs/maker/intruder-detector.md b/docs/maker/movement-detector.md
similarity index 91%
rename from docs/maker/intruder-detector.md
rename to docs/maker/movement-detector.md
index 2beb97bd..84bb610a 100644
--- a/docs/maker/intruder-detector.md
+++ b/docs/maker/movement-detector.md
@@ -1,4 +1,4 @@
-# Intruder Detector
+# Movement Detector
 
 This program will activate an alarm when an object moves in front of the Ultrasonic Sensor.
 
diff --git a/docs/static/maker/intruder-detector.png b/docs/static/maker/movement-detector.png
similarity index 100%
rename from docs/static/maker/intruder-detector.png
rename to docs/static/maker/movement-detector.png
diff --git a/docs/static/tutorials/intruder-alert/detect-method-dropdown.png b/docs/static/tutorials/security-alert/detect-method-dropdown.png
similarity index 100%
rename from docs/static/tutorials/intruder-alert/detect-method-dropdown.png
rename to docs/static/tutorials/security-alert/detect-method-dropdown.png
diff --git a/docs/static/tutorials/intruder-alert/play-sound-effect-dropdown.png b/docs/static/tutorials/security-alert/play-sound-effect-dropdown.png
similarity index 100%
rename from docs/static/tutorials/intruder-alert/play-sound-effect-dropdown.png
rename to docs/static/tutorials/security-alert/play-sound-effect-dropdown.png
diff --git a/docs/static/tutorials/intruder-alert/intruder-alert.gif b/docs/static/tutorials/security-alert/security-alert.gif
similarity index 100%
rename from docs/static/tutorials/intruder-alert/intruder-alert.gif
rename to docs/static/tutorials/security-alert/security-alert.gif
diff --git a/docs/static/tutorials/intruder-alert/set-status-light-dropdown.png b/docs/static/tutorials/security-alert/set-status-light-dropdown.png
similarity index 100%
rename from docs/static/tutorials/intruder-alert/set-status-light-dropdown.png
rename to docs/static/tutorials/security-alert/set-status-light-dropdown.png
diff --git a/docs/static/tutorials/intruder-alert/show-image-dropdown.png b/docs/static/tutorials/security-alert/show-image-dropdown.png
similarity index 100%
rename from docs/static/tutorials/intruder-alert/show-image-dropdown.png
rename to docs/static/tutorials/security-alert/show-image-dropdown.png
diff --git a/docs/tutorials.md b/docs/tutorials.md
index 76e2b815..24ea344c 100644
--- a/docs/tutorials.md
+++ b/docs/tutorials.md
@@ -102,11 +102,11 @@ Step by step guides to coding your @boardname@.
 
 ```codecard
 [{
-  "name": "Intruder Alert",
-  "description": "Build an intruder alert using the infrared sensor.",
+  "name": "Security Alert",
+  "description": "Build an security alert using the infrared sensor.",
   "cardType": "tutorial",
-  "url":"/tutorials/intruder-alert",
-  "imageUrl":"/static/tutorials/intruder-alert.png"
+  "url":"/tutorials/security-alert",
+  "imageUrl":"/static/tutorials/security-alert.png"
 }]
 ```
 
diff --git a/docs/tutorials/intruder-alert.md b/docs/tutorials/security-alert.md
similarity index 86%
rename from docs/tutorials/intruder-alert.md
rename to docs/tutorials/security-alert.md
index d8843e36..60da6e26 100644
--- a/docs/tutorials/intruder-alert.md
+++ b/docs/tutorials/security-alert.md
@@ -1,16 +1,16 @@
-# Intruder Alert
+# Security Alert
 
 ## Introduction @fullscreen
 
-The Infrared Sensor uses infrared light waves to detect proximity to the robot. Build an intruder alert using the infrared sensor. 
+The Infrared Sensor uses infrared light waves to detect proximity to the robot. Build an security alert using the infrared sensor. 
  
-![Brick in simulator with infrared sensor](/static/tutorials/intruder-alert/intruder-alert.gif)
+![Brick in simulator with infrared sensor](/static/tutorials/security-alert/security-alert.gif)
 
 ## Step 1
 
 Open the ``||sensors:Sensors||`` Toolbox drawer. Drag out an ``||sensors:on infrared||`` block onto the Workspace (you can place this anywhere). Use the second drop-down menu to select ``detected``.
 
-![Sensor detect method dropdown selections](/static/tutorials/intruder-alert/detect-method-dropdown.png)
+![Sensor detect method dropdown selections](/static/tutorials/security-alert/detect-method-dropdown.png)
 
 ```blocks
 sensors.infrared1.onEvent(InfraredSensorEvent.ObjectDetected, function () {
@@ -32,7 +32,7 @@ sensors.infrared1.onEvent(InfraredSensorEvent.ObjectDetected, function () {
 
 In the ``||brick:show image||`` block, use the drop-down menu to select the **STOP** sign image. 
  
-![Screen image selections](/static/tutorials/intruder-alert/show-image-dropdown.png)
+![Screen image selections](/static/tutorials/security-alert/show-image-dropdown.png)
 
 ```blocks
 sensors.infrared1.onEvent(InfraredSensorEvent.ObjectDetected, function () {
@@ -55,7 +55,7 @@ sensors.infrared1.onEvent(InfraredSensorEvent.ObjectDetected, function () {
 
 In the ``||brick:set status light||`` block, use the drop-down menu to select the ``red flash`` light 
  
-![Status light selection dropdown list](/static/tutorials/intruder-alert/set-status-light-dropdown.png)
+![Status light selection dropdown list](/static/tutorials/security-alert/set-status-light-dropdown.png)
 
 ```blocks
 sensors.infrared1.onEvent(InfraredSensorEvent.ObjectDetected, function () {
@@ -96,7 +96,7 @@ sensors.infrared1.onEvent(InfraredSensorEvent.ObjectDetected, function () {
 
 In the ``||music:play sound effect until done||`` block, use the drop-down menu to select ``information error alarm`` sound effect. 
  
-![Sound effect dropdown selections](/static/tutorials/intruder-alert/play-sound-effect-dropdown.png)
+![Sound effect dropdown selections](/static/tutorials/security-alert/play-sound-effect-dropdown.png)
 
 ## Step 9