Description:My name is Zhang Yiran, an ordinary network security engineer of baimeng software company. Baimeng software company is a limited company focusing on network security maintenance. The company is small, with a total of more than 20 people. In the industry is a small company, can only rely on bidding for some of the work of administrative units, ordinary can no longer be ordinary. Of course, this is my real identity, and my sense of superiority comes from the virtual world, where I am worshipped by netizens as “the God of technology”, “Cowman” and “technology house”. The police listed me as a hacker and put me on their “blacklist”, but I prefer the name in another circle – “grey guest”.