I recently had a bad experience with a program so I thought i would leave the title of the thread open ended so everyone could post other apps that fit in here. DO NOT USE VPNwatcher this little app was featured on torrentfreak. it watches the vpn connection to disconnect and then it kills whatever process you want. ie bittorrent. I trusted it too much and it failed. Air VPN disconnected for some reason and i guess it took too long for vpn watcher to shut it down. My ISP noticed, twice. I had to call in and listen to some guy tell me my connection had probably been hijacked. At least it wasn't a demand letter. But today I have setup comodo following the advice found on this site. Looks tightly locked so far. Don't make my mistake and try to take an easy way out. It probably took 15 to 20 minutes to get my net locked down with Comodo.