After eating, the time was less than eight o'clock, and it was too early to go home at this time, so Xiao Yuan and Xia Jiuying decided to read the book again at school and go home at ten o'clock, so Xiao Yuan sent Xia Jiuying to the business school, and then he was ready to go back to the laboratory for a while, just when he was about to leave the business school campus, he unexpectedly saw Rubin coming from the opposite side, this guy saw Xiao Yuan, his eyes lit up, he waved his hand to him again and again, and walked towards him quickly.

"Is there anything wrong with you?" Xiao Yuan stopped the bicycle and asked.

"Yes, I'd like to invite you to dinner with Natsu, okay?" Rubin said.

"Huh." Xiao Yuan laughed and said, "I'm really sorry, we've already eaten." ”

"Oh, that's a shame." Rubin shrugged his shoulders with a hint of regret on his face, but quickly changed to a smile and invited again, "But it's okay, can I treat you to a cup of coffee?" ”

"Do you have anything to do, if there is something to say now." Xiao Yuandao.

"I think we'd better find a place to sit down." Rubin said.

"If you still want me to work for you, forget it." Xiao Yuan saw that Rubin only wanted to invite himself to coffee, but did not mention Xia Jiuying, thinking that he was going to bring up the previous thing that made him work for him, so after refusing, he was about to leave.

"Wait, don't go yet." Seeing that Xiao Yuan was leaving, Rubin hurriedly reached out and grabbed his bicycle and said, "I wonder if you're interested in the kernel code?" ”

“，windows2000？” Xiao Yuan stopped when he heard the words and asked.

"Yes, it's Windows 2000, how about it, are you interested?" Rubin asked.

"You're not kidding, Windows 2000 is the most important core product that Microsoft is about to release, and the kernel code makes them the most core secret, how can you get your hands on it?" Xiao Yuan asked suspiciously, according to Microsoft's official publicity, windows2000 will be officially launched on February 17 this year, although imminent, but it has not been officially released, and if Rubin can really get its kernel code before the release of windows2000, it is really a means to the sky, no wonder he is skeptical.

"You don't have to care how I got it, I just want to ask you, are you interested in the code of Windows 2000, if so, maybe I can take out some of it for you to see." Rubin said.

"What do I have to pay?" Xiao Yuan is of course very interested in the core code of windows2000, but he also knows that the reason why Rubin threw such a tempting pie to himself must have a purpose, so he asked such a question.

"We'd better find a café where one person can ask for a cup of coffee and talk over a drink, what do you think?" Rubin again mentioned the coffee thing.

"Okay, you lead the way." Xiao Yuan said that the allure of the kernel code of Windows 2000 was too great for him, and although he knew that Rubin must have other purposes for looking for him, he could no longer find a reason to reject Rubin.

"Great, Xiao, I know that you are a principled person, so don't worry, I won't let you do anything that goes against your principles, and I'm sure we'll have a good time working together." Rubin saw that Xiao Yuan agreed to him, said happily, and after speaking, he turned around and walked outside the business school, pushed out a bicycle outside the business school, and took Xiao Yuan to a café not far from the business school.

"Now you can say it, what are you looking for me?" After sitting down, Xiao Yuan asked.

"Have you heard of 0day?" Rubin asked.

"You got the code of windows2000, do you want to find some 0-day vulnerabilities to come out, or do you want to release a 0-day cracked version?" Xiao Yuan asked, 0day he naturally knows, 0day is the abbreviation of zeroday, translated into Chinese is zero day, the earliest meaning of the word refers to the cracked version that appeared within 24 hours after the release of the software, or even before the official release, such a cracked version is often called the 0day version, and later, the word was extended by people, the scope expanded from software cracking to music, film and television, materials and other fields, and in the software field no longer specifically refers to software cracking, Vulnerabilities that are discovered on or before the release of the software are also known as zero-day vulnerabilities.

"It seems that you know about 0day, but I don't need to explain it anymore, but don't worry, we don't do 0day cracking and publicizing 0day vulnerabilities, we find 0day vulnerabilities, mainly sell them to software distribution companies, which is a legal, even popular behavior by software companies, I think you should be able to understand, if these vulnerabilities fall out, it may bring very big losses to software companies, so they are also happy for someone to study their system, Then sell the discovered vulnerabilities to them, so that although there is a certain price, it will be much smaller than the damage caused by the public safety incident caused by the vulnerability. Rubin explained.

"I see." Xiao Yuan nodded slightly, he also knew something about the situation that Rubin said, and even in blackskull, there were many people who were very keen to make money through this, and although he was not particularly keen on this kind of thing at the beginning, he would occasionally do one or two votes, analyzing the system to find vulnerabilities, although it was very laborious, and it also had a lot of chance, that is, it took a lot of effort to analyze the system, and it may not be possible to find vulnerabilities, but this kind of analysis is an excellent exercise for a hacker's technical analysis ability.

"Well, are you interested?" Seeing Xiao Yuan's thoughtful look, Rubin thought that he had been tempted, so he asked hopefully.

"I have a couple of questions." Xiao Yuandao.

"If you have any questions, just ask, and I'll try to answer them." Rubin said.

"First, since you specialize in this, then you must have a lot of strong technicians, so why do you still want to find me, and even take out the kernel code of Windows 2000 as bait?" Xiao Yuan asked.

"You're right, we have technicians, but we also lack masters who can compete with the guys in the Innovation Lab, and your performance in the Innovation Lab that day fully proves this, especially the fact that you were able to find BSD vulnerabilities that even Mark didn't find, which shows that you have superb attainments in operating systems that are difficult for ordinary people to achieve, can you accept such an explanation?" Rubin explained.

"You know Mark, too?" Xiao Yuan asked, he had just learned from Jessica an hour ago that Mark was an S-class member of Blackskull, but he didn't expect to hear the name Mark from Rubin soon.

"Of course I know, Mark is a master of operating system theory and design, but this guy is very low-key and not known to outsiders." Rubin said.

"Okay, I'll accept your first explanation, so let me ask you a second question, there are so many geeks in the Innovation Lab, have you ever thought about poaching some guys from there into your organization? Especially an operating system master like Mark, if he is willing to help you analyze the 0-day vulnerability of the operating system, he will be much better than me. Xiao Yuan asked.

"No, no, anyone who joins the Innovation Lab, our organization will not use it, please don't ask me why, because I can't explain to you, you are not joining the Innovation Lab now, so I will come to you again, if you accept Jessica's invitation to join the Innovation Lab, I am afraid this conversation between us will not exist." Rubin waved his hand and said.

"Okay, I won't ask, and one last question, of course, if you don't find it convenient to answer, you can also leave it unanswered." Xiao Yuan said.

"What's the problem?" Rubin asked.

"What is the relationship between you and Blackskull, cooperation, well water not against river water, or hostility?" Xiao Yuan asked.