How could you collect all those proofs?

"Mr Tonny Heck. You have crossed the limit this time. I got your information about trying to hack my system, long ago. I never thought that you will go to that level to destroy me. Did you think that I am so easy to fool?"John said with a cold voice and dangerous glare.

  Everyone including the directors startled to see his glare. The way he said, it sent chills down their spines. They decided not to tease this sleeping lion in future. Now, they were regretting their decision for coming here. They understand now that, John Smith would not leave them easily. They got ready to get punishment mentally.

"How ... how could you collect all these proofs? How did you know that it was me who was behind the case of hacking the system and bomb blast? I did not leave any trace behind."Tonny Heck asked. He was eager to know everything.