diff --git a/monkey/infection_monkey/network/elasticfinger.py b/monkey/infection_monkey/network/elasticfinger.py
index 228d4cdbe..41eabd18a 100644
--- a/monkey/infection_monkey/network/elasticfinger.py
+++ b/monkey/infection_monkey/network/elasticfinger.py
@@ -8,8 +8,6 @@ from requests.exceptions import Timeout, ConnectionError
 import infection_monkey.config
 import infection_monkey.network.HostFinger
 from common.data.network_consts import ES_SERVICE
-from infection_monkey.model.host import VictimHost
-import infection_monkey.network
 
 ES_PORT = 9200
 ES_HTTP_TIMEOUT = 5
@@ -32,7 +30,6 @@ class ElasticFinger(infection_monkey.network.HostFinger.HostFinger):
         :param host:
         :return: Success/failure, data is saved in the host struct
         """
-        assert isinstance(host, VictimHost)
         try:
             url = 'http://%s:%s/' % (host.ip_addr, ES_PORT)
             with closing(requests.get(url, timeout=ES_HTTP_TIMEOUT)) as req:
diff --git a/monkey/infection_monkey/network/httpfinger.py b/monkey/infection_monkey/network/httpfinger.py
index 0b1cd273e..ca5742c07 100644
--- a/monkey/infection_monkey/network/httpfinger.py
+++ b/monkey/infection_monkey/network/httpfinger.py
@@ -1,7 +1,5 @@
 import infection_monkey.config
-import infection_monkey.network
 import infection_monkey.network.HostFinger
-from infection_monkey.model.host import VictimHost
 import logging
 
 LOG = logging.getLogger(__name__)
@@ -22,7 +20,6 @@ class HTTPFinger(infection_monkey.network.HostFinger.HostFinger):
         pass
 
     def get_host_fingerprint(self, host):
-        assert isinstance(host, VictimHost)
         from requests import head
         from requests.exceptions import Timeout, ConnectionError
         from contextlib import closing
diff --git a/monkey/infection_monkey/network/mssql_fingerprint.py b/monkey/infection_monkey/network/mssql_fingerprint.py
index 4e7d35f26..87d08541d 100644
--- a/monkey/infection_monkey/network/mssql_fingerprint.py
+++ b/monkey/infection_monkey/network/mssql_fingerprint.py
@@ -3,8 +3,6 @@ import logging
 import socket
 
 import infection_monkey.network.HostFinger
-from infection_monkey.model.host import VictimHost
-import infection_monkey.network
 import infection_monkey.config
 
 __author__ = 'Maor Rayzin'
@@ -32,7 +30,6 @@ class MSSQLFinger(infection_monkey.network.HostFinger.HostFinger):
                 Discovered server information written to the Host info struct.
                 True if success, False otherwise.
         """
-        assert isinstance(host, VictimHost)
 
         # Create a UDP socket and sets a timeout
         sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
diff --git a/monkey/infection_monkey/network/mysqlfinger.py b/monkey/infection_monkey/network/mysqlfinger.py
index 50af642b2..eef675507 100644
--- a/monkey/infection_monkey/network/mysqlfinger.py
+++ b/monkey/infection_monkey/network/mysqlfinger.py
@@ -3,8 +3,6 @@ import socket
 
 import infection_monkey.config
 import infection_monkey.network.HostFinger
-from infection_monkey.model.host import VictimHost
-import infection_monkey.network
 from infection_monkey.network.tools import struct_unpack_tracker, struct_unpack_tracker_string
 
 MYSQL_PORT = 3306
@@ -29,7 +27,6 @@ class MySQLFinger(infection_monkey.network.HostFinger.HostFinger):
         :param host:
         :return: Success/failure, data is saved in the host struct
         """
-        assert isinstance(host, VictimHost)
         s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         s.settimeout(self.SOCKET_TIMEOUT)
 
diff --git a/monkey/infection_monkey/network/ping_scanner.py b/monkey/infection_monkey/network/ping_scanner.py
index 8838d17d0..899cc64b6 100644
--- a/monkey/infection_monkey/network/ping_scanner.py
+++ b/monkey/infection_monkey/network/ping_scanner.py
@@ -7,8 +7,6 @@ import sys
 import infection_monkey.config
 import infection_monkey.network.HostFinger
 import infection_monkey.network.HostScanner
-from infection_monkey.model.host import VictimHost
-import infection_monkey.network
 
 __author__ = 'itamar'
 
@@ -31,7 +29,6 @@ class PingScanner(infection_monkey.network.HostScanner.HostScanner, infection_mo
         self._ttl_regex = re.compile(TTL_REGEX_STR, re.IGNORECASE)
 
     def is_host_alive(self, host):
-        assert isinstance(host, VictimHost)
 
         timeout = self._config.ping_scan_timeout
         if not "win32" == sys.platform:
@@ -45,7 +42,6 @@ class PingScanner(infection_monkey.network.HostScanner.HostScanner, infection_mo
                                     stderr=self._devnull)
 
     def get_host_fingerprint(self, host):
-        assert isinstance(host, VictimHost)
 
         timeout = self._config.ping_scan_timeout
         if not "win32" == sys.platform:
diff --git a/monkey/infection_monkey/network/smbfinger.py b/monkey/infection_monkey/network/smbfinger.py
index 2e81db4b1..529c1e91a 100644
--- a/monkey/infection_monkey/network/smbfinger.py
+++ b/monkey/infection_monkey/network/smbfinger.py
@@ -3,9 +3,7 @@ import struct
 import logging
 from odict import odict
 
-import infection_monkey.network
 import infection_monkey.network.HostFinger
-from infection_monkey.model.host import VictimHost
 
 SMB_PORT = 445
 SMB_SERVICE = 'tcp-445'
@@ -109,7 +107,6 @@ class SMBFinger(infection_monkey.network.HostFinger.HostFinger):
         self._config = WormConfiguration
 
     def get_host_fingerprint(self, host):
-        assert isinstance(host, VictimHost)
 
         try:
             s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
diff --git a/monkey/infection_monkey/network/sshfinger.py b/monkey/infection_monkey/network/sshfinger.py
index bc1484de3..cd1cd4aaf 100644
--- a/monkey/infection_monkey/network/sshfinger.py
+++ b/monkey/infection_monkey/network/sshfinger.py
@@ -2,8 +2,6 @@ import re
 
 import infection_monkey.config
 import infection_monkey.network.HostFinger
-from infection_monkey.model.host import VictimHost
-import infection_monkey.network
 from infection_monkey.network.tools import check_tcp_port
 
 SSH_PORT = 22
@@ -35,7 +33,6 @@ class SSHFinger(infection_monkey.network.HostFinger.HostFinger):
                 break
 
     def get_host_fingerprint(self, host):
-        assert isinstance(host, VictimHost)
 
         for name, data in list(host.services.items()):
             banner = data.get('banner', '')
diff --git a/monkey/infection_monkey/network/tcp_scanner.py b/monkey/infection_monkey/network/tcp_scanner.py
index d50100c2b..019417eb0 100644
--- a/monkey/infection_monkey/network/tcp_scanner.py
+++ b/monkey/infection_monkey/network/tcp_scanner.py
@@ -2,7 +2,6 @@ from itertools import zip_longest
 from random import shuffle
 
 import infection_monkey.config
-import infection_monkey.network
 import infection_monkey.network.HostFinger
 import infection_monkey.network.HostScanner
 from infection_monkey.network.tools import check_tcp_ports, tcp_port_to_service