I am a new user to ubuntu and i ran chkrootkit and rkhunter and saw some things that have warning. I am wondering if I have to worry about anything.

In rkhunter I get /usr/bin/curl [ Warning ] I think this was when I install electricsheep

In chkrootkit I get Checking `aliens'...
/dev/shm/pulse-shm-1915139735

Checking `sniffer'... lo: not promisc and no packet sniffer sockets
wlan0: PACKET SNIFFER(/sbin/wpa_supplicant[821], /sbin/dhclient3[1725])

Could someone help explain what some of this mean? I think I understand rkhunter log in that curl is file transfer. The information from chkrootkit I don't get.

Any help would be greatful