Why does ABC open port 56666, is it a backdoor O_O; ?
Yes, ABC opens port 56666 but binds this port to IP:127.0.0.1 (Loopback IP). So other people can’t connect to your PC via this port, don’t worry. I open this port just for making a single instance program. Only one abc.exe can run at a time so if for example you add new torrent by clicking link on the torrent site. Windows will launch another abc.exe so this second abc.exe will check if there is a previous running abc.exe, if so 2nd abc.exe send .torrent location via socket port 56666 to the first running abc.exe.
