Jacques Villeneuve has admitted to being annoyed that his plans for a formula one team were publicly leaked.
The 1997 world champion is bidding to re-enter the sport as a constructor next year in collaboration with the Italian former GP2 outfit Durango.
But Germany's Auto Bild quoted Villeneuve, 39, as indicating he sees it as an unfair advantage that his opponents for the 13th team entry have not been similarly outed.
It is believed the only other contenders for the grid space are Stefan GP and Epsilon Euskadi.
But the French Canadian said: "I have no idea who or what we are fighting against.
"Everything was kept quiet and we were happy with it that way. But someone who is not even part of the project decided to talk about it. That's pretty annoying.
"I can't really say anything, because we don't have all the facts yet," added Villeneuve.
Earlier, he was quoted as saying Epsilon Euskadi's declaration that it is testing a wind tunnel model of its 2011 car is like "putting the cart before the horse".
He also refused to confirm or deny reports that the three 2011 hopefuls have been summoned to an interview later this week with the FIA in Paris.
But Villeneuve did confirm that he is no longer affiliated with Stefan GP.