"Momo, you're not very good at computers!"

"What are you going to do?"

"Hey~~" There was a wicked laugh on the other side of the phone, "I don't believe that she doesn't go online." Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ”

"Are you going to ......?"

"Momo, it's up to you this time, buddy's lifelong happiness!"

"You want me to be a hacker and dig up her contact information or something?"

"That's right, it's worthy of Momo, just guess it."

"......" Mo Hui didn't speak, thinking about the feasibility of this matter and the path to achieve it.

"Momo, two brothers in the world, you have to help me no matter what!"

“...... I'm not very good at hacking......" Mo said after thinking about it.

"It's better than me, a liberal arts student, you are not allowed to shirk this, I really can't figure it out, we won't have a chance in this life~~~Alas~~~" Han Wei also came to an aria behind him!

Mo Hui was thrilled by the aria, "Say it in advance, I don't guarantee that it will be done!" ”

"No problem! I'll treat you to a big dinner then! When are you coming? ”

Mo thought about it, "It's the weekend, I'll go over from work on Friday, and if you need to brute force it, it's hard to say how long it will take." ”

"Okay! Friday arrived on the phone for me, buddy please! ”

After hanging up the phone, Mo thought about it, went to the Internet to download a few special hacking tools, and then put the matter aside for the time being and continued his stock god development work.

・・・・・・

Before he got off work on Friday, Han Wei's call came, for fear that Mo would forget about it.

"Good, good!" Mo replied, "When I get home, I'll go to your place with my notebook!" ”

Han Wei lives in the west of the city, in a relatively old community, the environment and sanitation are average, and most of the people in this community are young people who rent here and come to the imperial capital to work hard.

The food stalls near the community are good, and they are also well-known in the imperial capital, and the two of them came to a barbecue with beer. After he was full of wine and food, Han Wei scratched his ears and scratched his cheeks and couldn't sit still, like a rat ready to steal oil, unable to settle down for a moment.

"Don't worry, I'll get it for you!" As he spoke, Mo Hui took out his notebook. "Are you sure you live in the unit next door to you?"

"That's right, it's definitely right, I guess I live on the 3rd or 4th floor."

"You're on the 5th floor, and there's at least one wall across her room, and if you're unlucky, maybe there's a two-thirds wall in between, or even a corridor or something, so it's up to your luck."

Mo Hui turned on the wifi search, there were more than 20 wireless signal sources in it, and the first thing to do now was to frame the suspicious target.

Mo Hui took out his mobile phone, connected it to his laptop, and clicked on a pre-prepared hacking software on the laptop.

"What is this?" Han Wei looked curious.

"This is for vector positioning." Mo Hui turned on the GPS function of the mobile phone as he spoke, and explained to Han Wei while operating. "You see, this software is GPS optimization software, which can accurately locate GPS to 1 meter."

Han Wei was confused when he heard this, and his face was unclear.

"Our usual mobile phone positioning, not the real sense of GPS positioning, academic GPS positioning usually refers to satellite positioning, and the positioning on our mobile phone, although it is also called GPS, in fact, it uses the signal difference of different base stations for triangulation, and the satellite has nothing to do with a dime."

"Generally speaking, the accuracy of mobile phone positioning is only given to 50 meters, and no matter how low it is, it will not be provided."

"Not available?"

"Yes, no, more accurate is not to be able to do it, but not to do it."

"Why?"

"Confidentiality, algorithms, costs, it is estimated that there are all kinds of factors."

"So you can do this software?"

"Triangulation, not only the base station can locate the mobile phone, the mobile phone can also position itself, this software only runs on the mobile phone, it also uses the signal difference, but it is much more accurate."

Mo Hui opened the software, and the signal of the mobile phone appeared on the enlarged map, flashing and flashing, "This involves the height difference algorithm, as well as the noise reduction algorithm, which needs to calculate the height difference of each base station and the attenuation of the signal by the building blockage." ”

"Now I'm associating the location of my phone with this software," Mo replied, pointing back to the WiFi analysis software.

"What is this for?"

"We have to use the mobile phone location as a benchmark to locate these wifi signals one by one." As he spoke, Mo Hui clicked on a wifi signal source named kkkaa.

"What we're going to do now is move more than 10 meters." Mo Hui slowly walked from the north window to the south balcony with his notebook.

"Okay, the relative position is automatically calculated." A rudimentary software box pops out, it's a three-dimensional axis, and a shiny point is marked. "Look, this X is the line we walked, and this point is this signal source."

"That's it...... It's that simple? "Han Wei is obviously Spartan, this is too tall, completely different world feeling.

"Simple? This is not prepared with professional equipment, if there is a miniature antenna, it is the kind of palm-sized satellite antenna, as long as the antenna is turned, it will naturally be positioned. ”

Han Wei was obviously a little stunned, which was a bit sophisticated for him.

Mo Hui's movements were very fast, and it didn't take half an hour for more than 20 signal sources that could be identified to be located, and in the three-dimensional image, these 20 points were almost the housing distribution map of Han Wei's unit and neighboring units. Now that the graph comes out, the target is pretty much narrowed down to 4 sources.

It seems that Han Wei's luck is not bad, the four signal sources on the 3rd and 4th floors of the next unit have been identified, and there is no problem of excessive signal attenuation under the wall barrier.

Now that you have found your target, the next step is to find a way to break into the gate. Mo Hui clicked on the password brute-force cracking software and pulled all four signal sources in.

Mo Hui stretched his waist and stood up, opened a can of Coke for himself, and Han Wei on the side was confused, "This is the end?" ”

"Now brute-force crack the wifi password, wait."

"How long does it take?"

"I don't know, it's just a matter of luck, if the password is simple, it may be done in a few minutes, if it's complicated, then it's not a score. If anyone is perverted and gets a 148-bit password, it is estimated that they can crack it until next year. ”

Mo Hui is more confident in the ultrabook, its computing speed is definitely enough, but this password cracking depends on the computing speed of the other party's wireless routing, so there is no way to accelerate, so you can only wait.

Fortunately, with good luck, it was just a cup of tea, and the 4 passwords were cracked one after another, and it seems that no one will be bored enough to set an extra-long password for their home wifi.