Xueba's computing system

Chapter 174 Preparing to arrest someone along the Internet cable
Lin Yuan found the information of the accounts used by OCR.

Judging from the suffix of the commonly used login places, SH.CN is naturally Songhu City in China. Coincidentally, Songhu is not far from Zijin City.

As for the rest, they are either overseas or in Hong Kong, and it will take a long time to find them.

Lin Yuan found Zhang Yan first.

Although he believed that his tutor or Dean Li probably had channels for searching online information, he and Zhang Yan were obviously more relaxed.

"Do you have any way to find the exact location of a device through its MAC address?"

Zhang Yan previously worked in the Cyber Security Brigade, so naturally he understood basic network knowledge such as MAC addresses.

"Brother, do you want me to follow the Internet cable and beat someone up for you?"

"I'm looking for the nail that OCR buried."

Zhang Yan put down the milk tea in his hand and said, "You mean, you got the MAC address of the device used by OCR?"

"Yeah, that's right."

"you sure?"

Lin Yuan nodded confidently.

"Brother, don't joke with me. If you have this ability, then you should be the boss of GuoAn."

Zhang Yan thought Lin Yuan was joking. If he could easily get the MAC address of the device used by the enemy, he could really attack people through the Internet cable.

"I'm not joking with you." Lin Yuan heard the hint of sarcasm in Zhang Yan's words.

"I secretly sent a small software to the other party, he opened it, and then my small software collected his device information."

Lin Yuan naturally had to find a reasonable excuse for his behavior.

"What kind of software is this? It's so powerful?" Zhang Yan believed it a little bit now, "Open it and show it to me."

Lin Yuan expected the other party's reaction. With Zhang Yan's temper, how could she curb her curiosity about such a thing?

"Ahem~~, you'd better not look at that little software, it's inconvenient."

"Brother, you are not trying to trick me into doing things for you, are you?" Ever since he saw Lin Yuan making money by speculating in stocks, Zhang Yan always felt that there was an evil aura around Lin Yuan.

"Is Senior Brother such a person?"

"It's hard to say. Who knows what your purpose is."

"From the sound of your voice, you have a way to find this MAC address?"

Zhang Yan sipped his milk tea proudly. "If this MAC address really belongs to a bad guy, then I will definitely find him out."

"He should be in Songhu."

"Don't change the subject. Where's your little software? Open it and show it to me. Your credibility with me is almost zero right now."

Lin Yuan sighed, "It's hard for you, gritting your teeth and hanging out with a liar all day long."

"Humph, I will arrest you for the third time sooner or later."

"No more fuss. I used a little trick to get the MAC address. I was just trying to get it because he would do something that all men would do."

The more Zhang Yan listened, the more curious he became. "What on earth is this?"

"I put some explosive videos in his mailbox, and he took the bait and opened it. This triggered the small software I installed. The software automatically collected the MAC address of him and all the devices in his local area network."

"You're talking about... not that kind of short video, right?"

"Yes, that's what you said."

"Eh~~" Zhang Yan looked at Lin Yuan with disdain, and subconsciously moved away from him. "You're already a married man, but you still do this."

"Just think of it as the foundation I accumulated before marriage."

"So where did you get the video from?"

"That's not the point. The point is that we have to follow the network line to beat people up now."

Zhang Yan pondered for a while, "It seems that this time it's a small fish. If someone falls for this trick, he must be an insignificant minion."

Lin Yuan was surprised to find that when the topic involved Zhang Yan's professional field, this girl was not stupid at all.

The fish certainly didn't take the bait because of Lin Yuan's fictitious little software, but because Lin Yuan asked Musk for user data. Lin Yuan used the excuse of the little software + the little video because he was sure that Zhang Yan couldn't really let him reproduce the process.

Could it be that Zhang Yan still wants to study short videos with him?

"Brother, you just said that the active location of this MAC is in Songhu. In this case, we need to cooperate with other places, and it takes a process to follow the clues. We also need to consider which unit will take action to arrest the person.

Anyway, this is generally a small fish. I don't think you need to alarm it now.

Because once the commotion gets so big, you won't be able to carry out your mission.

Once the mission is over, you will be transferred away."

Lin Yuan stared at the other person with wide eyes, "I was talking to you about family and national affairs, and you are talking to me about this?"

"How can I be partial? It's just a small fish, not worth it. Even if it were my master, he would definitely come to the same conclusion. Besides, is it wrong for me to care about you?"

Lin Yuan was silent for a while. This was the trouble with the practical part. Since the truth could not be told, it was easy for his words to be full of loopholes.

In fact, Lin Yuan knew that there was a big fish behind this MAC, but he just couldn't explain it to the other party.

"Zhang Yan, I'm a ball of rage right now. Just based on the grudge between me and the good group, the OCR side hasn't discovered that I've been exposed, simply because they don't take me seriously.

Once I really caught their attention, they would definitely arrange for someone to look for me. The commotion I caused in the good group was too big, and nothing could cover up my anger.

If they knew that a good group couldn't keep me even though they offered me an annual salary of millions, do you think they would still not see the problem?

By then, I will almost have the word "spy" written on my face."

Zhang Yan chewed over Lin Yuan's explanation carefully, "Then I understand. Brother, you want to catch the fish first, regardless of the size of the fish, before you are exposed."

Lin Yuan snapped his fingers, "bingo!"

"Then I understand. I'll go discuss it with my master right away." Zhang Yan said as he was about to find a place to make a phone call.

"Wait," Lin Yuan stopped her, "I found this point about the MAC address. What are you going to say?"

Zhang Yan immediately reacted, "Uh... it's really not honorable for you to touch that kind of thing. Then how can we reach a consensus?"

"Just say that I got the other party's MAC address when I was remotely demonstrating the software to them." Lin Yuan has always taken private work from OCR.

"Brother, you can't do this. You and I can agree on a statement, but once we are caught and our statements are compared, there will be problems."

Lin Yuan was stunned. It turned out that he was not as professional as Zhang Yan in this area.

"Junior sister, I'm lucky to have you. Otherwise, I would be in a great embarrassment."

Zhang Yan immediately raised his head, "Humph, you are just a fake brother. It's your fault that you haven't received any professional criminal investigation training. If people knew about your embarrassing incident, you would be so embarrassed."

Lin Yuan was obviously not afraid of fiddling with the video, but that if Zhang Yan hadn't reminded him, he wouldn't be able to explain it clearly. Because he also made up the excuse of the video. He was afraid that after being caught, he would not admit that he had received Lin Yuan's video.

Well, the biggest problem now is not how to catch people.

But how can he justify himself after arresting the person? Because Lin Yuan couldn't let the arrested person record the confession according to his own ideas.

Fortunately, Zhang Yan was smart. "Well, you can say this. Aren't you doing private software work for OCR? You can say that the other party ran your software and captured the MAC address.

As long as you don't mention the short video, the other party won't realize that the secret was leaked because of it.

As for whether he has run the software you sent, this is not important.

Even if he says he hasn’t done it, we won’t believe him.”

Lin Yuan asked, "But I always provide the source code to the other party, and there is obviously no code related to collecting MAC addresses in the code."

"It doesn't matter. You can just write a draft of code that you never send to the other party, and then insert a relevant MAC acquisition program snippet into it.

Even if the information you provided does not match the evidence found on site during a future review.

But we will definitely think that it was deleted by the other party.

The exploration of evidence inherently involves an element of inference.

As long as the person arrested has other sufficient evidence to prove that he is problematic, this tiny flaw in the chain of evidence can be ignored.

Don't worry, brother. No one will know that you are so hypocritical."

Lin Yuan was relieved now. "What the hell, how could I be so sanctimonious?"

Zhang Yan looked at him with disdain on purpose, "Stock trading shows that you are greedy for money, and watching that kind of stuff shows that you are lustful. Senior brother, how can you be such a person?"

"Oh," Lin Yuan was too lazy to explain, "From a distance, I thought I was a fairy, but when I looked closer, I turned out to be a demon."

Zhang Yan did not continue teasing, but stuffed Lin Yuan's milk tea into his hand, "No wonder you usually like to drink sugar-free jasmine... You should drink more to cleanse your soul."

Lin Yuan took the milk tea and said something irrelevant.

"Brother, I have something to talk to you about."

(End of this chapter)