diff --git a/docs/extension_takedown.json b/docs/extension_takedown.json
new file mode 100644
index 00000000..fe51488c
--- /dev/null
+++ b/docs/extension_takedown.json
@@ -0,0 +1 @@
+[]
diff --git a/docs/readme.md b/docs/readme.md
index 202cc41d..a25f222e 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -2,4 +2,6 @@ This folder hosts static website for `updates.phcode.io` which generally sends
 update notifications to all installed phcode builds.
 
 * `install.json` file in this folder is used by website `phcode.io` to set download button. This is auto updated
-  when a new release is published or edited.
\ No newline at end of file
+  when a new release is published or edited.
+* `extension_takedown.json` file is an array of extension ids that can to be taken down from the app due to
+  security issue(ie malicious extension)/TOS violation.