Eavesdropping machines, cameras, are essential items for spies, and they are not considered special equipment at all. Needless to say, even if the water organization is poor, it must be available.

But after Yang Yi put the surveillance equipment that was in handy on the dining table, he couldn't help but slapped the table and said loudly: "You can't guess what I found!"

Xiao Ran glanced at Yang Yi, then she picked up the camera and said, "What did you find?"

Yang Yi sighed, and then he said in a deep voice: "Hand, Martin Howard's handle, he must be obedient!"

Xiao Ran rolled her eyes at Yang Yi and said, "What kind of mystery is to pretend to be mysterious, what kind of secrets should you keep in mind?"

Kate pressed the play button of the recorder. Yang Yi quickly looked and grabbed the recorder. After turning it off, he said in a serious voice: "I solemnly warn you that the contents here may arouse your disgust, so please consider it carefully before you decide whether to listen to the contents inside."

Xiao Ran said in surprise: "No, is Martin really a dog lover?"

Yang Yi was stunned for a moment, then he frowned and said, "What, you say it again?"

Xiao Ran was also stunned for a moment, and then she said awkwardly: "Uh, isn't it?"

Yang Yi was amused and cried, and said, "What are you thinking in your mind."

Xiao Ran suddenly became angry again. She looked at Yang Yi and said angrily: "What are you doing in a mysterious way? What's the shameful thing?"

Xiao Ran snatched the recorder and turned on the play button. Then the sound came out quickly. Soon, Xiao Ran said with disdain: "What! Martin Howard is just a homosexual."

Yang Yi said in confusion: "Just? It's just?"

Kate said thoughtfully: "Which Martin Howard is older, he is indeed quite handsome and very graceful."

Xiao Ran nodded and said, "That's right, the charm of a mature man."

Kate listened to the recording and nodded, "The voice is quite sexy."

"Yes, I agree."

"Then is his boyfriend handsome?"

"Look at it, there is no video."

Yang Yi couldn't help it, and he shouted: "Stop! Stop! Your focus is completely wrong, right? Turn it off! I can't stand it anymore, turn it off immediately!"

After snatching the recording pen and turning it off, Yang Yi said with pain: "What are you thinking about? Can it be more normal? Can it be?"

Xiao Ran said disdainfully: "It's so strange."

Kate also spread his hands and said, "Yes, is this the handle you said?"

Yang Yi was almost collapsed, and then he said hatefully: "Forget it, just think that my ability to bear is poor. Now call Candy and Schultz down."

Without anyone calling, Candy and Schultz have already come down with their computers.

Although she stayed up all night, Candy didn't look tired at all. She turned the computer in front of Yang Yi and said, "It's all done. There are 32 cameras on the outside, and there are much fewer surveillance cameras on the inside, only seven, but they are all in very critical positions. In addition, the fire evacuation diagram helped us figure out the key location. The central computer processor of the Ministry of Interior is on the third floor, where there are two cameras and two guards. In fact, there are 36 guards in the entire Ministry of Interior building, but there are only six guards at night shifts, two of them in the surveillance room."

Schultz also put his computer on and smiled and said, "We can take over the monitoring at any time. Oh, some computers have cameras, so we have also taken a lot of images inside the office, all of which are insensitive areas, but it is enough to create a complete 3D diagram. Bai Yao and I spent most of the night to make the 3D diagram, and also marked the patrol route of the night guards, and the red line part is."

That's great, Tang Guo and Schultz's ability is better than Yang Yi's most optimistic expectation.

Yang Yi's face was full of smiles, he nodded frequently, and then he shouted: "How did it do it?"

Schultz shrugged, "That's what it is, like all hackers."

"I mean, how to solve the technical difficulties? It is impossible to connect to the Internet in a place like a monitoring room, right?"

Tang Guo waved his hand and said, "Yes, physical isolation, no network connection, but we can still hack into the monitoring network because the system they use has loopholes. They only need to connect to a computer in the Ministry of Interior building to control more computers. Then if you have the chance, you can control the computer in the monitoring room. Of course, monitoring requires computers, and we can do it easily, without luck, which must be explained."

Yang Yi looked at Xiao Ran, then looked at Kate, and then found that the two of them were also confused, so he knew that it was not the only one who could not understand.

"I mean, how can you control the computers in the monitoring room that are not connected to the outside world?"

Schultz said seriously: "It's not that there is no networking, it's just that there is no networking with the outside world, but the monitoring itself is a small closed network, as long as we can take over the computer..."

Tang Guo smiled and said, "They were not asking this. Let me explain. We are using sound. Do you understand?"

"sound?"

"Yes, the basic principle is very simple. Using a computer with a speaker or a speaker to generate sound waves is an infrasonic wave that cannot be heard by the human ear. Then, the vibration frequency is introduced into the data storage disk of the hard disk, find the right frequency and generate a resonance effect, and use this as a means of attack to interfere with the hard disk until the hard disk is damaged and stop working."

Yang Yi touched his head and said, "So magical?"

Schultz replaced Tang Guo as an explanation work, and he smiled and said, "This is not magical, this is not a new technology. In 2008, the chief technology officer of joyent company in the United States publicly displayed this technology. I was just inspired and improved on this technology."

Tang Guo pointed to the computer and said, "When the guards found that the control computer in the monitoring room stopped, of course they needed to repair it, but when they restarted it and found that it was useless, they could only change to another computer. What computer would you use? Is it a bulky desktop computer or a laptop that you pick up and leave? When they used a laptop to replace the original computer to control all the cameras, then our opportunity came, let the laptop establish an IFI connection, and we controlled it remotely, so until they changed the computer, the monitoring system of the Ministry of Interior Building was controlled by me and Black Lightning, which was that simple."

Kate looked at Yang Yi blankly and said, "Do you understand?"

Yang Yi thought for a while and said, "It seems that I understand, so you are in charge of surveillance now, but it won't work after changing the computer, right?"

Tang Guo spread her hands and said, "Please think about the work efficiency of the Ministry of the Interior. When they confirm that the computer is damaged, and they will report to apply for another computer, how long do you think it will take?"

Yang Yi took a breath and said, "You are right that desperately inefficient Ministry of the Interior, that's it, so our chance to do it has come, that's it!"
Chapter completed!