Now that he knows the hackers' attack methods, the next thing to do is to write the corresponding counterattack program, Feng Xiaotian has done one of them, in terms of flood attacks, he no longer needs to be afraid, what he needs to do now is to deal with viruses specifically, which requires a protective software.

To put it bluntly, that is, the firewall, any virus, before launching an attack, needs to enter your computer, Feng Xiaotian thought of the method is to keep these viruses out, so he thought about it for more than an hour before starting to do it.

Writing firewall software is not so easy, at least it is much more comprehensive than the software that responds to flood attacks, which requires a huge virus reserve - of course, this is other people's understanding, Feng Xiaotian came up with a more alternative way to this, when he wrote the firewall, he directly set up a data conversion point, that is to say, all the information that needs to be processed will be transferred to other computers by the firewall, this computer is equivalent to a proxy, and Feng Xiaotian is behind the scenes, if anything goes wrong, will not endanger his computer, since all the data can not enter Feng Xiaotian's computer, this of course eliminates the risk of his computer being infected with viruses, I have to say, Feng Xiaotian's idea is really quite alternative, if it were someone else, who would have thought?

It took two whole days to complete this very alternative firewall software, and he gave this software a nickname, called "Qiankun Great Shift", which is also very appropriate, at least it can explain how this firewall works.

After getting the firewall, Feng Xiaotian began to modify the flood attack counterattack program, and he also gave this program a nickname, called "Big Bad Wolf", because this program is mainly through deception, so that the other party's flood attack turns around against himself, which is very deceptive, so the name Big Bad Wolf is also appropriate.

It took Feng Xiaotian less than half an hour to write this program last night, so this program will inevitably have some flaws, and after his improvement, this program has become quite perfect, at least there is no need to worry about the crash of the program due to excessive data flow.

After getting these, Feng Xiaotian began to look for system vulnerabilities, until the school opened on the eighteenth day of the first month, Feng Xiaotian was doing this, I really didn't know how to find it, and I was shocked when I found it! Feng Xiaotian actually found thirteen vulnerabilities on the Microsoft 3.0 system!

At the beginning, he was still very excited, after all, it also showed that he had gained, but as more and more system vulnerabilities were discovered, Feng Xiaotian was a little uneasy, there are so many hackers in the world, there must be many other people who have also discovered these vulnerabilities, in case these people enter their computers through vulnerabilities......

Feng Xiaotian had a feeling of being naked and running, so he immediately began to fix system vulnerabilities, and every time he found one, he eliminated one, and until the day before school started, he was burying his head in it.

On the night of the seventeenth day of the first lunar month, Feng Xiaotian patched the last vulnerability he found, and then he began to think, the question he was thinking about was about artificial intelligence, seeing that the Microsoft system had so many vulnerabilities, Feng Xiaotian was deeply touched, which made him think of artificial intelligence again.

If you really want to talk about it, he has been busy these days, and the artificial intelligence is about to be thrown out of the clouds by him, thinking of this stubble at this moment, Feng Xiaotian suddenly felt clueless, he didn't know where to start, and after thinking for a long time to no avail, he could only go to bed to rest.

Tomorrow is the day of the new semester, and he must keep his spirits up, because every year at the opening ceremony, the principal and other leaders will make a long speech on the rostrum, if he doesn't rest well, I'm afraid he won't be able to hold on.

On the morning of the eighteenth day of the first lunar month, Feng Xiaotian picked up the rags as usual, and after selling the rags at Lao Li, he went home to make breakfast, and after eating, he changed into the clothes he usually wore to school and went to school to report.

Today's weather is very good, there is no cold north wind, there is no gray sky, the sun comes out early, the warm sun caresses the earth, the young buds can be seen everywhere by the path, and the whole land exudes vitality.

Feng Xiaotian is carrying an old-fashioned military satchel, the army green satchel has been washed white, and the corners are seriously worn, and at a glance you know that it has been used for many years, indeed, this satchel is left by Feng Xiaotian's father, since Feng Xiaotian was in elementary school, it has followed Feng Xiaotian, and now almost ten years have passed, it is still with Feng Xiaotian, of course, not because Feng Xiaotian likes it very much, but because Feng Xiaotian is reluctant to spend money on a new school bag.

Look at Feng Xiaotian's clothes to know his condition: the upper body is wearing a black cotton jacket, although the cotton jacket is not broken, but it looks very incongruous on Feng Xiaotian's body, the hem of the cotton jacket is almost covering Feng Xiaotian's knees, and his hands are also hidden in the long cuffs of the cotton jacket.

Feng Xiaotian is just fifteen years old, and now he only pursues being able to eat well, nutrition or anything else is unthinkable, so Feng Xiaotian is very short, not even one meter six, compared with his peers, he is a veritable dwarf.

Feng Xiaotian's lower body was wearing an army green trousers, needless to say, the pants were also good, and from the high rolled up trouser legs, he knew that this dress didn't fit at all.

Look at his feet again, he is wearing a pair of yellow-gray Jiefang brand sneakers, with a few patches on the shoes, how shabby they look.

Therefore, when Feng Xiaotian walked into the campus in this dress, many people cast disdain for him, and some people even felt that Feng Xiaotian should not come to school, because the school had such a person, the students felt disgraced.

In this regard, Feng Xiaotian simply turned a blind eye, he had long been accustomed to this kind of gaze, facing the eyes full of ridicule and disdain all around, Feng Xiaotian always looked as usual, when he walked into the classroom of the third class of high school, the originally lively classroom suddenly quieted down, and after a while, a voice said: "Why is this guy here again?" The leaders of the school are really, why should they give him free tuition? If he was asked to pay the tuition, I am afraid that he would not be able to afford to go to school for a long time, right? In this way, our class will not have to be ridiculed by others because of this stinky food. ”

The name of the person who spoke was Li Xiaohu, and he was the little bully in the third class of high school, because his family was rich, and he knew the second-rate people in the society, so no one dared to provoke him in the class, and when he heard him say such a thing at this moment, the whole class laughed and agreed, even the female classmates were no exception, Li Xiaohu looked very energetic, and he was a famous handsome guy in Guo Lin No. 3 Middle School, so it was natural that many female classmates would like him, so it was not surprising that these female classmates also echoed him.