Number Puzzle

Two years ago, the hacker "Ghost" washed his hands and sold the core of the "Ghost" Trojan for which he became famous to a mysterious buyer. Two years later, his brother, a programmer, died under mysterious circumstances. The official conclusion was that he suffered cardiac arrest. He didn't believe it. When he pursued the truth in his own way, the code that should not have appeared appeared on the server that his brother last visited before his death. A mysterious organization called "Shadow Protocol" has surfaced - it has penetrated into the government, military, and financial systems, and weaved a digital skynet covering the world. Lu Yan became prey. But he forgot that a cornered hacker is the most dangerous hunter. When code becomes a weapon, when the Internet becomes a battlefield, can one person use a keyboard to leverage the foundation of an empire? He is not looking for the truth. He is the truth's nightmare. ---