Cousin
Tonny's aim was only to take revenge on his grandfather Lucas and Smith family. He knew that although he could not get any information about Lucas, John Smith and his company, Smith Enterprise was not unreachable to him. He knew that the destruction of Smith Enterprise was the destruction of the Smith family.
He did not know the reason behind his grandfather's enmity to the Smith family. But he knew that Smith family was also responsible for his misfortune.
Tonny made a plan to destroy the company. He already came to know that John Smith is not such a person, whom he can beat easily. He needs a solid and long term plan to destroy him. He knew that John had his own military as well as the expert investigators. So, he must be very careful to deal with John. If John somehow came to know about his plan, he would make Tonny's life hell.