diff --git a/abusehelper/lib/facter/botnets.rb b/abusehelper/lib/facter/botnets.rb
new file mode 100644
index 0000000..5921fbc
--- /dev/null
+++ b/abusehelper/lib/facter/botnets.rb
@@ -0,0 +1,15 @@
+Facter.add(:botnets) do
+    setcode do
+        botnets = []
+        if File.executable?("/usr/bin/botnet")
+            listcmd = "su -s /bin/sh - nobody -c '/usr/bin/botnet list'"
+            output = Facter::Util::Resolution.exec(listcmd)
+            output.lines.each do |line|
+                if m = line.match(/^\[\d+\]\s+(.*\.py)/)
+                    botnets << File.basename(File.dirname(m[1]))
+                end
+            end
+        end
+        botnets.sort.join(',')
+    end
+end