When Zeng Xuanli went back, he summoned Zhang Gong and Liao Gong together to prepare for the security transformation of Jinlong Pharmaceutical's network overnight. She took out the document given by Hu Yifei and said, "You guys study this document first, and then come up with a specific plan." This is the information I got from the experts, mainly for the top secret theft methods. ”

Zhang Gong and Liao Gong hurriedly took it, the two of them are now very discouraged, as senior industry insiders, they have not figured out how Hu You expert stole the documents, this morning routine document inspection, and found that the experimental data has been copied traces. The hackers entered the supposedly very secure network they created, stole files, and did not trigger any alarm of the monitoring system.

The two took it, only looked at the first page, and suddenly wondered: "Incredible, incredible!" ”

"What's wrong? Is the file wrong? Zeng Xuanli asked.

"It's not!" Zhang Gong shook his head, "The secret theft method mentioned here is really unheard of, I didn't expect this method to be thought of!" ”

Liao Gong nodded, "In the past, I just thought that these methods had a feasible theoretical basis, but they were a bit absurd in practice, but now it seems that they are not absurd at all!" ”

"Is there a solution to that?" Zeng Xuanli asked again.

"Yes!" Zhang Gong pointed to the bottom of the document, "The solution has been given in the document!" Masters, masters! ”

The two of them couldn't put it down when they picked it up, and looked down in one go, which came to the sixth item, Zhang Gong realized at this time, "The Hu You expert last time didn't just use the buzzer to send the file out, right?" ”

Liao Gong also felt the same way, and said: "This must be the case, we all let him be deceived, we didn't notice his movements on the phone last time, and he also lied to us that it was some kind of bullshit shadowless god catch, it was purely to confuse the sight!" ”

Zeng Xuanli heard that the two of them also mentioned the buzzer, so he hurriedly asked, "Tell me what's going on, how can the buzzer transmit the file?" ”

Zhang Gong explained: "The principle is very simple, the buzzer can be controlled by programming, which creates conditions for hackers to control it; Secondly, the buzzer can emit a very high frequency sound, even ultrasound, and this ultrasound, our human ears are inaudible. ”

"Yes!" Liao Gong nodded, "It is also mentioned in this document that you only need to convert the format of the file, and then control the buzzer to send it at the frequency of ultrasound. Although ultrasound cannot be heard by our ears, any ordinary recording device can record it, and then restore the recorded audio file through the conversion tool, and you can get the original file! ”

Zeng Xuanli was dumbfounded, what? Buzzers, ultrasounds, files can be converted into sound, and sound can also be converted into text? It was all beyond her knowledge, and it seemed unbelievable to her, like a fantasy, and she never thought that documents could be stolen in this way.

"Well, it's too hidden!" Zhang Gong opened his eyes, "Even if various dialogues are mixed in during the recording process, these sounds can be filtered." The person who can come up with this method is not simple, not only must be proficient in the computer level, but also proficient in ultrasonic testing. ”

Liao Gong also sighed, "In fact, this technique is debunked, and it is not magical at all." The mobile phones we usually use can still transmit the sound thousands of miles away instantly, but we are numb when we contact it every day. ”

Zhang Gong smiled: "That's true! I didn't expect that Hu You expert to come up with such a method without learning or knowing! ”

"His brain must not be able to come up with it, maybe he learned it from some master!" Liao Gong remembered that the last time Hu Yifei grabbed thirty meters without a shadow, he was a little itchy at the root of his teeth, this kid deliberately took himself to the ditch, no wonder he couldn't figure it out after a week.

"What a nonsense expert!" Zeng Xuanli raised his eyebrows and said angrily: "I think you are the experts of Hu You!" People can steal documents in front of you, and you can't guess what the method is, that's the ability! Didn't you say that you were a senior expert, so why didn't you prevent this in advance, why can't you figure it out after a week! ”

The two of them suddenly shrunk their necks, they didn't know what kind of anger Zeng Xuanli was making, obviously she was shouting and stomping Hu Yifei every day, but now she couldn't say a word!

"Look!" Liao Gong was more clever in the end, and quickly changed the topic: "The latter item is about how to avoid data monitoring!" ”

The two continued to study the document, but Zeng Xuanli's heart couldn't calm down for a long time, she went to apologize to Hu Yifei today, just for Jinlong Pharmaceutical, not sincerely, even so, she still felt that she had been greatly wronged, and she was reluctant. It wasn't until Hu Yifei took out the document that she sincerely said thank you, but that thank you was also said for Jinlong Pharmaceutical.

Zeng Xuanli didn't feel that he should apologize to Hu Yifei at all, it was he who sold his QQ, and it was he who loved to show off, how could this be regarded as his own fault.

The two people in front of me are both top safety experts in China, and Jinlong Pharmaceutical took a lot of effort to dig them up. But Hu Yifei's document made the two top security experts exclaim incredible, which shows how high the technical content and value of the document are. But Hu Yifei kept the documents of the Shaolin abbot network after the 80s.

Zeng Xuanli carefully examined his usual speech and demeanor for the first time, and recalled all the encounters since he met Hu Yifei.

Hu Yifei is the first person who can deceive his QQ number and dare to sell it when he turns his face, which makes him very angry and feels that his IQ and charm have been humiliated. I went to the University of Science and Technology to find him, but it caused a turmoil, Hu Yifei carried three punishments, and was almost expelled from the school, and in the first round, no one took advantage.

Subsequently, someone on the Internet frantically hyped up the matter, Hu Yifei spent money to find someone to blatantly deter these people, which calmed the hype, he should be selfless at this time, not for him, but for himself. Then, he beat him up, and humiliated him with money, and in the second round, he won all of them.

Hu Yifei was looking for hackers for himself at the time, and every time he saw him in the future, he always threatened him with this matter, the more he retreated everywhere, the more he pressed step by step, which led to his madness, and his madness seemed to be just to prove that his previous retreat was not incompetent, but because he was unwilling to care.

Zeng Xuanli sighed faintly, he really mistook Hu Yifei, that guy who seems to be unlearned, obscene, greedy for money and lustful on the outside, but has his unique cuteness and innocence in his heart, he has always thought that he was right, but he didn't expect that this was the biggest mistake in itself.

The next day, Hu Yifei went to work in Weilan again as usual, and this time the fourth child also followed. After getting out of the car, the fourth child exclaimed, not for Weilan, but for the big signboards of Microsoft, Google, and Oracle opposite Weilan.

"Second master, your place to work is really good!" The fourth child is very envious, "I can meet these elites in the IT industry every day!" ”

Hu Yifei nodded, smiling bitterly in his heart, only Lao Tzu came to work alone on the weekend, and he met with him, all of the best people in the security industry arrived at the office, hung up the IP for scanning, Hu Yifei led the fourth child downstairs, ready to go to the electronic city to buy a hard drive, he continued to skip shifts, he was used to it, and he was not as afraid as when he first came, now he can flash people at any time, and he doesn't need to say hello to anyone.

This made the fourth child even more envious, a huge building, the security guards all listened to Hu Yifei, Hu Yifei came when he wanted, left when he wanted, such a good job, where to find it.

"Second master, do you still need people here?" The fourth child smiled, and he almost regarded Hu Yifei as the chairman of Weilan.

"Let me ask!" After Hu Yifei finished speaking, he asked the security guard at the door, "Do we still recruit security guards in our building?" ”

The security guard was stunned for a moment, and then smiled: "No recruitment!" What, this brother of yours is going to be a security guard? ”

The fourth child suddenly rolled his eyes and said, Lao Tzu is not a security guard.

Hu Yifei spread his hands, "It's not that I don't help you, it's that I'm here, so I can only talk to the security guards." I didn't see anyone else in the company. ”

The security guard said, "On weekends, only our security guards work!" ”

Only then did the fourth child understand that the intern in charge of the second family was about to become a security guard, and his heart suddenly felt sad, and when he graduated, he was afraid that he would not even be able to be a security guard.

The two of them spent the morning shopping, and finally bought a hard drive and two pirated discs. After lunch, the two of them swayed and went to Weilan again, Hu Yifei had to harvest the scan reports of those IPs before retreating, there was no way, when he was a monk for a day, he had to hit the clock for a day.

When I went up to the sixth floor, I saw that the door of the Cyber Security Department was open, and the security guard was standing at the door walking back and forth.

Hu Yifei "sighed" in his heart, damn, it's broken, it must be someone who came, I'm afraid I can't hide the matter of skipping work in the morning, strange, why didn't the security guard downstairs say anything just now, I can prepare a rhetoric.

When the security guard saw Hu Yifei, his face was overjoyed, he pointed inside, and motioned for Hu Yifei to hurry in.

"Mysterious mystery!" The fourth child scratched his head and walked in directly.

Hu Yifei was about to pull the fourth child, but he didn't expect the fourth child to jump in first, and his heart was broken, so he had to follow up quickly, but found that there was a person sitting inside, Feng Yueying.

"Brother Kaede, hello!" Hu Yifei hurriedly said hello, and suddenly realized in his heart, no wonder the security guards were dangling at the door, it turned out that outsiders were coming, and there was no one in the company, so the security guards had to watch, and the other one was that the security guards were in a hurry to play games.

(To be continued)