War Thunder Tiger II P with x-ray vision

I have no idea how he could know I was there. I was completely hidden behind that wall, I was not moving my turret or the tank (I was looking through binoculars which doesn't move the turret), I did nothing to reveal my location. Yet he saw me through the high wall and hit me spot-on through it as well, together with his buddy. They knocked out my gun and engine on first shot. If I was a suspicious person I would suspect foul play (cheats) being at work here...