Edit: If you use the "save password" function in multi-player Be aware that other people can easily get your login information for your http://www.digitalcombatsimulator.com account (by using some nasty tricks). And use this to suck up your Product-keys and take over your account.
To avoid this:
-Never (!) share your Network.cfg
-much better: Don't use the "Save Password" option (Un-check it!)
-use only mods from trusted sources !
-Only download the installation files from http://www.digitalcombatsimulator.com
-Change your password for your Account at http://www.digitalcombatsimulator.com
-if someone ask you to send/post your Network.cfg : report this to the moderators !