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index 5642935..4095757 100644
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@@ -100,7 +100,7 @@
 # Offensive tools
 
 - [ToRat](https://github.com/lu4p/ToRat) - Cross-platform remote administration tool written in Go using Tor as a transport mechanism.
-- [dos-over-tor](https://github.com/zacscott/dos-over-tor) - Proof of concept denial of service over Tor stress test tool.
+- [dos-over-tor](https://github.com/skizap/dos-over-tor) - Proof of concept denial of service over Tor stress test tool.
 - [oregano](https://github.com/nametoolong/oregano) - Python module that runs as a machine-in-the-middle (MITM) accepting Tor client requests.
 
 # Onion service tools
@@ -140,6 +140,7 @@
 # Tor server hardening tools
 
 - [Tlsdate](https://www.torproject.org/getinvolved/volunteer.html.en#project-tlsdate) - Secure parasitic rdate replacement maintained by the Tor Project that sets the local clock by securely connecting with TLS to remote servers and extracting the remote time out of the secure handshake.
+- [onion-grater](https://github.com/Whonix/onion-grater) - Whitelisting filter for dangerous Tor control protocol commands.
 
 # Tunneling tools