diff --git a/protocols/inspircd.py b/protocols/inspircd.py
index 9bf228c..f5e559f 100644
--- a/protocols/inspircd.py
+++ b/protocols/inspircd.py
@@ -770,4 +770,5 @@ class InspIRCdProtocol(TS6BaseProtocol):
             self.removeClient(killed)
         return {'target': killed, 'text': args[1], 'userdata': data}
 
+
 Class = InspIRCdProtocol
diff --git a/protocols/ts6.py b/protocols/ts6.py
index 571f77c..e748477 100644
--- a/protocols/ts6.py
+++ b/protocols/ts6.py
@@ -17,7 +17,7 @@ class TS6Protocol(TS6BaseProtocol):
         super().__init__(irc)
         self.casemapping = 'rfc1459'
         self.hook_map = {'SJOIN': 'JOIN', 'TB': 'TOPIC', 'TMODE': 'MODE', 'BMASK': 'MODE',
-                         'EUID': 'UID'}
+                         'EUID': 'UID', 'RSFNC': 'SVSNICK'}
 
         # Track whether we've received end-of-burst from the uplink.
         self.has_eob = False
@@ -657,7 +657,7 @@ class TS6Protocol(TS6BaseProtocol):
 
     def handle_su(self, numeric, command, args):
         """
-        Handles SU, which is used for setting login information
+        Handles SU, which is used for setting login information.
         """
         # <- :00A ENCAP * SU 42XAAAAAC :GLolol
         # <- :00A ENCAP * SU 42XAAAAAC
@@ -669,4 +669,11 @@ class TS6Protocol(TS6BaseProtocol):
         uid = args[0]
         self.irc.callHooks([uid, 'CLIENT_SERVICES_LOGIN', {'text': account}])
 
+    def handle_rsfnc(self, numeric, command, args):
+        """
+        Handles RSFNC, used for forced nick change attempts.
+        """
+        # <- :00A ENCAP somenet.relay RSFNC 801AAAAAB Guest75038 1468299643 :1468299675
+        return {'target': args[0], 'newnick': args[1]}
+
 Class = TS6Protocol
diff --git a/protocols/ts6_common.py b/protocols/ts6_common.py
index 22ed160..5a826b7 100644
--- a/protocols/ts6_common.py
+++ b/protocols/ts6_common.py
@@ -440,3 +440,13 @@ class TS6BaseProtocol(IRCS2SProtocol):
             if not (self.irc.channels[channel].users or ((self.irc.cmodes.get('permanent'), None) in self.irc.channels[channel].modes)):
                 del self.irc.channels[channel]
         return {'channels': channels, 'text': reason}
+
+    def handle_svsnick(self, source, command, args):
+        """Handles SVSNICK (forced nickname change attempts)."""
+        # InspIRCd:
+        # <- :00A ENCAP 902 SVSNICK 902AAAAAB Guest53593 :1468299404
+        # This is rewritten to SVSNICK with args ['902AAAAAB', 'Guest53593', '1468299404']
+
+        # UnrealIRCd:
+        # <- :services.midnight.vpn SVSNICK GL Guest87795 1468303726
+        return {'target': self._getUid(args[0]), 'newnick': args[1]}