Chapter 15 System Vulnerabilities

  Now that we know the hackers' methods of attack, what needs to be done next is to write corresponding counterattack programs. Feng Xiaotian has already achieved one point in this regard. In terms of flood attacks, he no longer needs to be afraid. What needs to be done now is a specialized approach to dealing with viruses, which requires a protective software.

  In short, it's a firewall. Any virus needs to enter your computer before launching an attack. Feng Xiaotian thought of a way to keep these viruses out, and he spent more than an hour thinking about it before taking action.

  Writing firewall software isn't that easy, at least it's much more comprehensive than the software for dealing with flood attacks, which requires a large virus reserve - of course, this is how others understand it. Feng Xiaotian, however, came up with a rather unconventional approach. When writing the firewall, he directly established a data conversion point, meaning that all information requiring processing would be transferred by the firewall to another computer. This computer served as an agent, while Feng Xiaotian remained behind the scenes. If any problems arose, they wouldn't endanger his computer. Since all data couldn't enter Feng Xiaotian's computer, this naturally eliminated the risk of his computer getting infected with viruses. It has to be said that Feng Xiaotian's idea was indeed quite unconventional - who else could have thought of it?

  After spending two whole days, Feng Xiaotian finally completed this very unusual firewall software. He gave it a nickname called "Qiankun Da Nuoyi", which is quite fitting and can explain the working principle of this firewall.

  Having finished the firewall, Feng Xiaotian began to modify the flood attack counterattack program. He also gave this program a nickname, called "Big Gray Wolf", because this program mainly uses deception to make the opponent's flood attack turn around and deal with itself, with very strong deception. Therefore, the name Big Gray Wolf is also quite appropriate.

  Feng Xiaotian wrote this program in less than half an hour last night, so it's inevitable that the program has some flaws. After his improvement, the program became quite perfect and at least doesn't need to worry about crashing due to too large data flow.

  After finishing all this, Feng Xiaotian began to look for system vulnerabilities, until the 18th of the first month when school started, Feng Xiaotian was doing this, it's really not looking and not knowing, one look and a fright! Feng Xiaotian actually found thirteen large and small loopholes in Microsoft 3.0 system!

  At first, he was still excited, after all, this also meant that he had gained something. However, as more and more system vulnerabilities were discovered, Feng Xiaotian became somewhat unsettled. With so many hackers in the world, it was certain that many others had also discovered these vulnerabilities. What if those people used the vulnerabilities to enter his own computer...

  Feng Xiang Tian had a feeling of being naked and running, so he immediately started to repair the system vulnerabilities. Every time he found one, he would eliminate it, until the day before school started, he was still working on this task.

  On the evening of January 17th, Feng Xiaotian fixed the last vulnerability he found, and then he began to think. The question he was thinking about was related to artificial intelligence. Seeing that Microsoft's system had so many vulnerabilities, Feng Xiaotian was deeply moved, which made him think of artificial intelligence again.

  To be honest, he had been busy for days and artificial intelligence was almost thrown away. At this moment, Feng Xiao Tian suddenly felt confused and didn't know where to start. After thinking for a long time without any result, he could only go to bed and rest.

  Tomorrow is the first day of the new semester, he must be in high spirits, because every year at the opening ceremony, the principal and other leaders will give long speeches on the podium, if not well-rested, I'm afraid it's hard to hold on.

  On the morning of January 18th, Feng Xiangtian was picking up trash as usual. After selling it to Old Li, he went home and made breakfast. After finishing his meal, he changed into his school uniform and headed to school for registration.

  Today's weather is very nice, no longer the biting north wind, nor the gloomy sky. The sun came out early, and the warm sunlight gently stroked the earth. Tender shoots can be seen everywhere along the roadside, and the whole land exudes a vibrant vitality.

  Feng Xiaotian was carrying an old-fashioned military canvas backpack, the olive green backpack had been washed until it turned white, and the edges were severely worn out, one could tell that it had been used for many years. Indeed, this backpack was left behind by Feng Xiaotian's father, and it had been with him since he started elementary school. Now, nearly ten years had passed, and it still accompanied Feng Xiaotian. Of course, this wasn't because Feng Xiaotian liked it very much, but rather because he couldn't bear to spend money on a new backpack.

  Just look at Feng Xiaotian's clothes and you can tell his situation: he is wearing a black cotton-padded jacket, the jacket is not broken but it looks very out of place on Feng Xiaotian's body, the hem of the jacket almost covers his knees, and his hands are also hidden in the long sleeves of the jacket, at first glance, you can tell that this is an adult's clothing.

  Feng Xiaotian was only fifteen years old, and all he pursued was being able to eat his fill. Nutrition was something he didn't even dare think about. As a result, Feng Xiaotian's physique was very short and small, not even reaching 1.6 meters tall. Compared to his peers, he was indeed a genuine little runt.

  Feng Xiao Tian's lower body was wearing a pair of military green trousers, which were also long enough to be rolled up high at the hem, showing that this garment was completely ill-fitting.

  Looking at his feet again, he was wearing a pair of yellow-gray Liberation brand sneakers with several patches on them, which looked shabby no matter how you looked at them.

  So, when Feng Xiaotian walked into the school with this outfit, many people cast contemptuous glances at him, and some even felt that Feng Xiaotian shouldn't be in school, and because of someone like him, his classmates all felt ashamed.

  In response, Feng Xiao Tian was completely oblivious to it all. He had long been accustomed to such gazes and remained expressionless in the face of the mocking and disdainful eyes surrounding him. When he walked into the classroom of High School Year 1 Class 3, the originally lively room suddenly fell silent. After a moment, a voice spoke up: "How did this guy come back? The school leaders are really something else - why did they exempt him from tuition fees? If they had made him pay, I'm afraid he wouldn't have been able to afford it and we wouldn't be ridiculed by others because of this good-for-nothing."

  The speaker's name is Li Xiaohu, a small tyrant in Class 3 of High School Year 1. Because his family has money and he knows some second-rate people in society, no one in the class dares to provoke him. At this moment, when they hear him say such things, all the classmates burst out laughing and agree with him, including the female students. Li Xiaohu is very spirited and is a famous handsome boy in Guolin Middle School, so it's natural that many female students like him, and these female students also follow suit, which is not surprising at all.

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