WarLight is built in such a way that no sensitive data is revealed to the client application. That means it's impossible to build an app that reads the data stream and gives you additional info (such as seeing through fog or looking at other player's orders.)
The only way you could do these things are:
1. If you control two accounts on opposite teams, and use one account's ability to see his teammates positions and orders to relay information to help the other account win.
2. If you guess or otherwise learn a player's e-mail address and password and then log in as them.
I sent fizzer several emails about this he never responds.
This is a blatant lie as I've never received a single e-mail from him, nor anyone about this subject. Given that these guys can't produce a game link, and are making up stories it's clear these guys are just spreading FUD. I recommend ignoring them.