diff --git a/security.md b/security/README.md
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rename from security.md
rename to security/README.md
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+++ b/security/README.md
@@ -1,4 +1,8 @@
-## Basic security
+## ☠️ Security
+
+----
+
+### Basic security notes
 
 
 * `tx.origin` is used: you want to replace it by “msg.sender” because otherwise any contract you call can act on your behalf.