1diff --git a/nixops/backends/libvirtd.py b/nixops/backends/libvirtd.py
2index bc5f4af7..edd1348b 100644
3--- a/nixops/backends/libvirtd.py
4+++ b/nixops/backends/libvirtd.py
5@@ -8,12 +8,18 @@ import shutil
6 import string
7 import subprocess
8 import time
9-import libvirt
10
11 from nixops.backends import MachineDefinition, MachineState
12 import nixops.known_hosts
13 import nixops.util
14
15+try:
16+ import libvirt
17+except:
18+ class libvirt(object):
19+ def __getattribute__(self, name):
20+ raise ValueError("The libvirt backend has been disabled because of security issues.")
21+
22 # to prevent libvirt errors from appearing on screen, see
23 # https://www.redhat.com/archives/libvirt-users/2017-August/msg00011.html
24