It was the first time Liu Fang had heard that hackers had been graded, so he was filled with strong curiosity and immediately asked, "Brother Saif, can you tell me about the grade of hackers?" I'd like to find out. Pen, fun, pavilion www. biquge。 info”

Saif nodded: "Of course there is no problem with this, what I just said is the most high-grade hacker, in addition to discovering system vulnerabilities, people who can independently write extremely powerful hacker software also belong to the most high-end hackers, and the power here is confirmed through actual testing, often the more difficult it is to crack the hacking software, the higher the grade of the hacker who wrote it." ”

"This is the first gear, which is also called 'super hackers', and the second tier of hackers are those who can develop hacking software, and these hacking software has some power. Generally speaking, they are the technology diffusers of the hacker group, and the vast majority of other hackers use technologies that are developed by them, and this kind of person is also called 'elite hackers', which belongs to the more powerful existence in the hacker group. ”

"The third-tier hackers refer to those who have certain technology, but are not very brilliant, although they can develop some hacking software, but the power is limited, this kind of people like to swagger the most, and most of the hacking incidents in the newspapers are done by them."

"As for the fourth-tier hackers, they refer to people who have superficial hacking skills, but do not write hacking software by themselves, and can only use software developed by other hackers.

Saif said this and looked at Liu Fang with extremely admiring eyes: "Since you can find so many system vulnerabilities, it means that you belong to the category of super hackers, and you are also the top existence in the super hacker group!" ”

Liu Fang blinked his eyes and said in his heart: Am I so powerful? It's just a few months of self-study that you become the top of the super hackers? Did Saif make a mistake?

As soon as Liu Fang thought of this, Said, who was on the side, said: "Look, the monitoring screen has switched again!" ”

Liu Fang hurriedly put away his mind and focused on patching the loopholes. A quarter of an hour later, he had fixed all five of the holes, and only then did he feel a little safe.

Next, Liu Fang opened the monitoring program embedded in the computer, and after just one glance, he found that this program was very strange.

Liu Fang has the incredible skill of "True Eye", according to the arrangement of the two numbers 0 and 1, he found that a small plug-in of the monitoring program was obviously abnormal, and after a short observation, Liu Fang began to modify it.

How can you tell if there is a problem with the program by the numbers 0 and 1? The answer is actually very simple, just analyze the arrangement of these two numbers.

For example, if a code is restored to binary and the number combination of "01" is displayed, if the next code is restored to binary and "0000001" is displayed, then it can basically be determined that there is a problem with the next code.

After all, a computer program is actually composed of a superposition of many logical operations, and if two adjacent pieces of code are too different in nature, it means that it is not logical, and it can be determined whether the program is abnormal.

Liu Fang can even write a new operating system, of course, it is not a problem to modify a small plug-in, when he finished modifying, Fahd and others immediately found that the monitoring screen that was still automatically switched just now suddenly stopped.

Liu Fang also saw it, and he showed a smile: "After the program is modified, it means that the hacker has lost the tool to continue to control, which is equivalent to us regaining control." ”

Saif excitedly said: "You are really good! Got this guy done so quickly! ”

Liu Fang shook his head when he heard this: "It's too early to say this, if you want to make sure that guy is still there, you need to conduct a detailed inspection of the network environment." ”

Liu Fang opened the network control program while speaking, and found that the computer had only one user, which meant that the computer had not been compromised.

He was just about to retract his gaze to report to Fahd, when a user name was suddenly added to the interface, and the other party's code name was very unique, and it was actually called "hacker", which translated into Chinese means hacker.

Everyone present knew English, and when they saw the English word "hacker", everyone was stunned at first, and then Saif said angrily: "What is this guy doing?" Show off your hacking skills? Hum! What an arrogant guy! Genius, you hurry up and teach him a lesson! ”

The genius in Saif's mouth naturally refers to Liu Fang, Liu Fang did not answer when he heard this, but frowned: "I have obviously patched all the system vulnerabilities and modified the abnormal plug-ins, why can this guy successfully invade again?" ”

If you want to hack into a computer quietly, the best way is to sneak in through a system vulnerability. In front of Liu Fang, once the system vulnerability is blocked, no matter who it is, there is no way to invade quietly, which is why Liu Fang will be confused.

"Is it possible...... There are other vulnerabilities in this system, but I haven't found them? ”

As soon as Liu Fang finished speaking, he found that the core program of the computer was being modified, and he didn't think much about it, and immediately responded. Liu Fang's choice of response is very simple, that is, to follow the traces of the other party's invasion and trace the actual IP address of the other party.

Hackers are invisible existences, once they are traced to their real IP, it means that all your secrets are exposed to the eyes of the other party, which is an unbearable result for a hacker.

Although Liu Fang does not know much about some of the hackers' attack methods, he still knows the essence of hackers, and like all other hackers, Liu Fang believes that as a hacker, the first priority is to ensure their own safety in all circumstances.

Liu Fang didn't want to start a battle with the other party for control of the computer, because this was his territory, and whoever won in the end would suffer a loss of his territory.

It's like a robber sneaking into your house, and you can only violently drive him away, whether you end up driving him away or not, your furniture will suffer some damage, no matter how you calculate it, it won't be worth it.

Liu Fang wants to directly attack the opponent's lair, as long as this person is not arrogant to the point of being hopeless, then he will definitely not turn a blind eye to his tracking actions, so that Liu Fang can change his posture and change from the defensive side to the offensive side. As the saying goes, offense is the best defense, and Liu Fang's choice is very appropriate.