Rule department scholar

She held a reference book in her hand, printed out a few test questions, and handed the papers to Zhao Yi.

Sun Liang is not in the classroom.

"Where's Sun Liang?" Niu Lianhua frowned slightly dissatisfied.

"do not know."

"He wasn't with you at noon?"

Zhao Yidao, "We went to eat on the street opposite the school, and I came back after eating. I didn't pay attention to him, and I don't know what to do." He also felt a little strange, and Sun Liang should have returned long ago.

Niu Lianhua nodded and went out.

Maybe it was looking for Sun Liang, maybe it was just going back to the office, or resting somewhere else.

When Zhao Yi was about to do the question, he heard Zhao Linlin say sourly, "I feel that you and Sun Liang are more intimate than me and her. Now she is your aunt, no, mother."

Lin Xiaoqing laughed 'puchi', she turned sideways and said, "Linlin, don't be sour, Mr. Niu just values ​​competition."

"I know too!"

Zhao Linlin sighed, "She has been teaching for so many years, and she has never had a single student win an Olympiad. She must take it seriously."

"You are hypocritical!"

Zhao Yi said disdainfully, "It was you who said Mr. Niu was in charge of everything before, and it's getting sour if he doesn't care about you."

"That's right! Don't you just want this?" Lin Xiaoqing continued, "I don't know who keeps saying, 'I really hope Aunt Niu doesn't care about me'. Your grades have improved, and Teacher Niu didn't force you to take physics tuition at noon anymore. gone."

"Or do you want to continue tutoring?" Zhao Yi followed up.

"Let Teacher Niu supervise your study 24 hours a day?" Lin Xiaoqing continued to follow.

Zhao Linlin looked at Lin Xiaoqing, then turned her head to look at Zhao Yi, scratching her hair depressedly, "You guys!"

She gritted her teeth and said, "Why are you more and more like a couple!"

"oops!"

Lin Xiaoqing spat lightly, and blushed anxiously, "What nonsense are you talking about!"

"It was."

Zhao Linlin found a breakthrough in the counterattack, and she couldn't close her mouth when she smiled, "Look, one sentence per person. Husbands sing and women follow!"

"Don't talk nonsense!"

"I didn't talk nonsense!"

"You're just like a couple with him!"

"Really?" Zhao Linlin smiled indifferently, "Why don't you give him to me!"

"Take it!"

"Cut, I don't want it!"

"Send it to you!"

"It stinks, I'd better give it to you!"

Zhao Yi listened cheerfully at first, but then he realized that something was wrong, why did he seem to be a lump... Cough cough, why do you want to be disgusted by all kinds of things?

When the two girls were laughing, Sun Liang quickly ran in from the door, shouting triumphantly, "I made 50 yuan just now!"

Several people looked over.

Sun Liang rushed to Zhao Yi's side and said excitedly, "There is a policeman, I don't know what he is doing, and he asks other people about me at the door. I was taken aback, so I went to ask what's the matter. Guess what's the matter with him?"

"You say it."

Zhao Yi's indifferent tone was a bit shocking.

Sun Liang didn't care at all, and continued to say excitedly, "He actually asked me to do a math problem! It's really a math problem, and it's a problem I just did. Last week, remember? The last problem in that set of math papers was very difficult. ..."

"He said that if I help to make it, he will give money."

"Twenty at the first opening!"

"I thought he was joking again and just said fifty lines? He actually agreed. This is the first time I have encountered such a good thing. After finishing the questions, he really gave me two hundred!"

"Remember, if you ask me a question in the future, it will cost at least...five yuan! [-]% off!"

As Sun Liang said, he took out the red ticket in his pocket, and found something strange about the reactions of several people, "What's wrong with you?"

Zhao Yi and the three looked at each other.

Lin Xiaoqing was the first to hold back, covering her mouth and burst out laughing, then she covered her stomach and shook her shoulders.

Zhao Linlin also laughed.

Zhao Yi took a deep breath, smiled and said to Sun Liang, "If someone comes to you tomorrow, you will ask for five hundred!"

"No less than five hundred!"

"By the way, this is the paper that Teacher Niu brought. Here, the questions on it are quite difficult..."

……

Went home that night.

Zhao Yi quickly entered the working state, and made the final revisions to the thesis. When the revisions were almost done, he also passed a copy to Professor Liu, asking him to help him take a look.

Professor Liu quickly replied, "You can submit the manuscript directly. I greeted Kamani, and she will review the manuscript for you in the next two days. It doesn't matter if there are minor errors in the format, she will help you revise, Perfect it."

After Professor Liu finished speaking, he added, "This is also the job of the review editor."

real or fake?

How good is the review editor of Journal-of-the-ACM?How can you even improve the format of the submission?

Zhao Yi always felt that something was wrong, so he simply searched the Internet and found an introduction of a 'Kamani'.

Shirley Carmeni.

Ph.D. in biology, Ph.D. in informatics, professor at Oxford University, editor of Journal-of-the-ACM...

Importantly, female editors?

Age 57?

Zhao Yi made up his mind on "Professor Liu and Professor Kamani, the pure friendship established by academic exchanges when they were young", and then simply shook his head, realizing that he really shouldn't.

Be respectful!

Don't overthink it!

After he finished working on his thesis, he remembered the police website, as if the matter of intrusion had been suppressed again.

Zhao Yi entered the web address of the management portal, but was prompted 'the wrong link was entered'.

"Changed the entrance?"

He opened the police website again, opened the source code mode to browse the information, and the file names of the management entries of some websites were attached to the root directory of the webpage.

Zhao Yi found several file names, but after trying, none of them were management entries.

This is kind of troublesome!

The other party deliberately hid the management entrance, so it is not easy to find the management entrance.

Zhao Yi opened the routing monitoring record, and there are many access links to the police website, but because of the security performance of routing and browsers, just like penguin chat messages, most of the suffixes are hidden, and it is almost impossible to decipher the garbled characters. impossible.

"Look for a way!"

Thinking about it, Zhao Yi opened the shared files of the 'Heart Alliance' group, most of which are basic, but some introductions to the intrusion website, maybe they can bring some inspiration?

He watched carefully.

After patiently watching for a period of time, Zhao Yi found an introduction to "false routing information". By constructing the data packets of the source host and the destination host, sensitive information can be used to attack the target host.

He suddenly had an inspiration, "Can you copy the information?"

"Forge a data packet with a copy function, copy the information sent by the target host, and then send it to my computer?"

Zhao Yi's eyes lit up as he thought about it.

Do it!

Give it a try!

Chapter 1 Don't be afraid that the other party will change again this time!

Copying is the basic function of the computer.

The bottom layer of the computer will have a copy function, and the copy function does not require code at all, just an execution instruction, but if you want to rely on your own computer to copy data that has not been recognized by other computers, the difficulty can be completely It's different.

Zhao Yi thought about it and made a data packet with an "IP suffix" attached to it. By sticking the data packet to the information sent by the target host, the "navigation" function of IP can be realized, and the information will be "navigated" by it.

This is not copying, it is interception.

The target information is not copied, but directly intercepted and sent elsewhere.

"Unless you can obtain greater permissions, or use the target host for replication, it is too difficult to replicate."

This cannot be resolved in a short time.

If the target host is used to implement the copy function, it is relatively simpler, but it is also equivalent to controlling the target host. The method is also very simple, that is, to launch a Trojan horse program.

"To hang a Trojan horse, you must break through the interception program and cannot be recognized as a Trojan horse. Hiding is the most important thing, but as long as it is running, it may be recognized."

"It's easy to destroy, just make an infinite copy, or run it with some program..."

Zhao Yi shook his head.

Even if it is a Trojan horse program, the purpose is definitely not to cause damage. It is meaningless to harm others and not benefit yourself, and it will involve serious legal issues.

The Trojan horse program to be created cannot be destructive, and it is better to have a self-destruct function...

Self-destruct function?

Zhao Yi suddenly remembered that in the Dota game, there was a hero called Goblin Engineer, whose ultimate move was to commit suicide directly, bursting out with enormous power on the spot.

In this way, the opponent will not be able to get the head, and the effect is not bad in the case of death.

"If the execution of the Trojan horse is a one-time operation, there will be no sequelae. Even if it is detected, it does not matter. It is only a one-time operation anyway."

"At the same time, can it achieve many functions?"

Zhao Yi's eyes lit up after thinking about it, and he immediately wrote it according to the train of thought.

For a one-time execution program, if the code is simple enough, it will be very easy to embed into other software, programs, and documents, but it must have the advantages of being easy to launch and execute, and not easy to be detected, otherwise it will be meaningless .

This is the difficulty.

Zhao Yi decided to use low-level code to write. The low-level code can be embedded in various places, and can also directly call and execute some low-level computer functions to improve the ability of his own program.

soon.

Relying on the abilities of "Law of Cause and Effect" and "Contact Rate", he completed the 'One-time Trojan Horse Framework'.

The next step is to add functionality.

Zhao Yi's purpose is to break into the police website. It is best to find the management entrance of the website, put the Trojan horse on the computer of the police department, and copy the webpage record information, which is a good choice.

This function is too simple to implement.

Because the same operating system is used, many of the file paths of the browser's default history browsing records are exactly the same. You only need to use the underlying instructions to perform the copy function operation and create a function to send to the specified IP. up.

But for the sake of insurance, he still decided to start from the bottom, first find the file path, and then perform copy and transfer operations.

Transferring is much more difficult than copying.

If you want to transmit, you must establish a connection. The default IP host of the Trojan horse must also have a port for direct connection.

Zhao Yi made another reception procedure.

The program has to run all the time to be able to receive the information transmitted by the execution of the Trojan horse.

The following is the last step - to deliver the Trojan horse program.

"Make a website with a Trojan horse? By the way, hide the IP so that others can't find it easily?"

"Do you want to design another program?"

"wrong!"

Zhao Yi shook his head suddenly. His goal was the police website, and it didn't need to be so complicated.