diff --git a/index.html b/index.html
index 719ce72f..ef98bdaa 100644
--- a/index.html
+++ b/index.html
@@ -12,6 +12,9 @@
 	<meta name="keywords" content="privacy, anonymity, privacy tools, surveillance, encryption, edward snowden, nsa, tor, bitcoin">
 	<meta name="description" content="You are being watched! Knowledge, encryption and privacy tools to protect you against global mass surveillance.">
 
+	<!-- content security policy -->
+	<meta http-equiv='Content-Security-Policy' content="Content-Security-Policy: default-src 'none'; script-src https://privacytoolsio.github.io"; style-src 'unsafe-inline'>
+
 	<!-- title -->
 	<title>Privacy Tools - Encryption Against Global Mass Surveillance</title>