diff --git a/src/net_processing.cpp b/src/net_processing.cpp
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -3356,6 +3356,7 @@
             HexStr(hash.begin(), hash.begin() + CMessageHeader::CHECKSUM_SIZE),
             HexStr(hdr.pchChecksum,
                    hdr.pchChecksum + CMessageHeader::CHECKSUM_SIZE));
+        Misbehaving(pfrom, 100, "msg-header-checksum-mismatch");
         return fMoreWork;
     }
 
diff --git a/test/functional/abc-invalid-message.py b/test/functional/abc-invalid-message.py
new file mode 100755
--- /dev/null
+++ b/test/functional/abc-invalid-message.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python3
+# Copyright (c) 2019 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""ABC Invalid Message Test
+
+Test that invalid messages get rejected and/or ban the sender as expected for
+each case.
+"""
+
+import struct
+from test_framework.mininode import (
+    NetworkThread,
+    NodeConn,
+    NodeConnCB,
+    msg_ping,
+    mininode_lock,
+)
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import p2p_port, wait_until
+
+
+def msg_bad_checksum(connection, original_message):
+    message_data = bytearray(connection.format_message(original_message))
+
+    command = original_message.command
+    data = original_message.serialize()
+    i = 0
+    i += len(connection.MAGIC_BYTES[connection.network])
+    i += len(command)
+    i += len(b"\x00" * (12 - len(command)))
+    i += len(struct.pack("<I", len(data)))
+
+    # Make the checksum invalid
+    message_data[i] = (message_data[i] ^ message_data[i]) & 0xFF
+    return message_data
+
+
+class InvalidMessageTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = False
+        self.num_nodes = 1
+
+    def run_test(self):
+        # Create a P2P connection to one of the nodes
+        callback = NodeConnCB()
+        connection = NodeConn('127.0.0.1', p2p_port(0),
+                              self.nodes[0], callback)
+        callback.add_connection(connection)
+
+        NetworkThread().start()
+        callback.wait_for_verack()
+
+        # Create a valid message
+        valid_message = msg_ping(callback.ping_counter)
+
+        def wait_for_ping():
+            def check_ping():
+                if not callback.last_message.get("pong"):
+                    return False
+                return callback.last_message["pong"].nonce == callback.ping_counter
+            wait_until(check_ping, lock=mininode_lock)
+            callback.ping_counter += 1
+
+        # The valid message is accepted
+        callback.send_message(valid_message)
+        wait_for_ping()
+
+        # Make an invalid copy of the valid message with an invalid checksum
+        invalid_message = msg_bad_checksum(connection, valid_message)
+
+        # The invalid message should cause a disconnect because we are now
+        # banned
+        callback.send_raw_message(invalid_message)
+        callback.wait_for_disconnect()
+
+
+if __name__ == '__main__':
+    InvalidMessageTest().main()
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py
--- a/test/functional/test_framework/mininode.py
+++ b/test/functional/test_framework/mininode.py
@@ -1375,6 +1375,12 @@
         else:
             logger.error("Cannot send message. No connection to node!")
 
+    def send_raw_message(self, message):
+        if self.connection:
+            self.connection.send_raw_message(message)
+        else:
+            logger.error("Cannot send raw message. No connection to node!")
+
     def send_and_ping(self, message):
         self.send_message(message)
         self.sync_with_ping()
@@ -1548,10 +1554,7 @@
             logger.exception('Error reading message:', repr(e))
             raise
 
-    def send_message(self, message, pushbuf=False):
-        if self.state != "connected" and not pushbuf:
-            raise IOError('Not connected, no pushbuf')
-        self._log_message("send", message)
+    def format_message(self, message):
         command = message.command
         data = message.serialize()
         tmsg = self.MAGIC_BYTES[self.network]
@@ -1562,6 +1565,16 @@
         h = sha256(th)
         tmsg += h[:4]
         tmsg += data
+        return tmsg
+
+    def send_message(self, message, pushbuf=False):
+        self._log_message("send", message)
+        tmsg = self.format_message(message)
+        self.send_raw_message(tmsg, pushbuf)
+
+    def send_raw_message(self, tmsg, pushbuf=False):
+        if self.state != "connected" and not pushbuf:
+            raise IOError('Not connected, no pushbuf')
         with mininode_lock:
             if (len(self.sendbuf) == 0 and not pushbuf):
                 try: