Chapter 181 HACK!

"It's really free!" Lin Hong was surprised when he saw the returned coin, "What's the principle? What is that little box?

Just now, Kevin put the small box on the microphone and played a sound. Lin Hong knew that this must be the key.

"This small box is an audio simulator." Kevin took out the small box again. "In the flyer circle, they usually call it the 'blue box'. Of course, I didn't make it blue."

"The program-controlled telephone exchange is controlled by receiving audio. The dual-tone multi-frequency technology I just mentioned, the audio signal generated is relatively normal. In fact, there are some special audio signals that can control the program-controlled telephone exchange. Of course, these frequencies are confidential, and the telephone company is fundamental It will not be made public.

At this time, Kevin pressed the button on the "Blue Box" again.

"du"

"Don't underestimate this frequency, it is very useful in the telephone system. In fact, the principle is very simple. When the program-controlled telephone exchange hears this frequency, it will immediately respond to it. You know, machines are generally stupid. They will only follow the originally set process.

"2600Hg is a switch in a telephone network. When the program-controlled switch receives this frequency, it will allow long-distance calls to be connected without additional costs. If you want to make a free long-distance call, what you have to do is to send such a frequency to the program-controlled switch.

"How was this discovered?" This is a loophole in the telephone system. It must be the confidential content of the telephone company, which will not be easily known to others. What Lin Hong is interested in is how the flyers found these loopholes.

"Test! Keep testing!" Kevin said naturally, "The telephone system is a huge black box. You can't see the structure inside and don't know its basic principles, but this doesn't mean that we can't explore it... Only by constantly testing it and then checking its reaction can we master its rules.

Then, Kevin briefly introduced the history of Flyers to Lin Hong.

The history of telephone flyers can be traced back to the 1950s. At that time, the pulse dialing method was just replaced, and the telephone system began to fully enable the dual-tone and multi-frequency audio dialing method.

In Virginia, the United States, there is a little boy named Joseph Engesia. He was born blind, but he was very smart. He became interested in the phone when he was four years old and found that he could make phone calls through pulse dialing.

"You know, when God closes one of your doors, he will open the other." Kevin said, "Although blind people can't see, their hearing and touch functions are often much more than normal people. This is a selective forced evolution, and this speed and effect of evolution amaze every geneticist and biologist!"

When talking about this, Lin Hong felt that Kevin seemed to have an indescribable pride and yearning in his heart at this moment.

"This is an extremely mysterious place." Kevin once again pointed to his brain, which is more sophisticated and complex than any machine invented by human beings. The intricate telephone system is in front of our brains, just like a primitive toy..."

Maybe he feels a little off topic, and Kevin is back to the previous topic.

"Engersia is blind, his hearing has been strengthened, and his perception and control of audio. His tongue can make a very accurate tone.

During a call, he whistled his friend and found that their call was suddenly cut off. So, Engesia called the phone company and asked them why they cut off their phone. As a result, the customer service staff of the phone company didn't know anything about it. Engesia, who was full of exploratory spirit, began to try to find the reason. As a result, he found that the frequency sent out with a whistle was exactly 2600Hg, and the telephone system seemed to dislike this frequency very much. As soon as he heard the pronunciation, he would hang up the phone...

In this way, the door of the flying world was completely opened to him. He became a flying passenger who could control the telephone system with his own whistle, so everyone called it 'whistle'.

"How can you produce an accurate frequency just by using a whistle?" Lin Hong was amazed by his ability. How strong the control ability it must be!

Kevin laughed and said, "It's not uncommon. As far as I know, there are many blind telephone flyers in the United States, and they all have such abilities."

"Although the telephone system is huge, the basic principle is there. It may not change for decades, and even if they find such a loophole, they will not be able to fix it in time, because once it is changed, it will affect the content of many aspects. This is why the phone The reason why the company has a headache for the flyers.

Hearing this, Lin Hong nodded thoughtfully, which is not difficult to ignore. As the saying goes, "the boat is small and easy to turn around." The more complex a thing is, the bigger it is, and the greater the cost of changing it is. It's not that he doesn't want to change it, but there's no way.

The same is true for the aS system. Although they know that I have only successfully gained control, there is no way to stop me. Unless they completely rebuild the whole system and fundamentally change the principle, otherwise if they want to block my access, unless the whole system is completely shut down directly, it is obvious that F-tamed will not Accepting this result, there are too many people to monitor every day. Once closed, they will become blind and can only monitor the target by the most primitive means.

"Of course, after so many years, the SaS system should also be upgraded. According to the information I have received, FBL has already begun to build a new system called aURORA. Compared with the old SaS system, this system is more powerful, taking advantage of the latest computer communication and satellite monitoring. Control technology, but I haven't got more detailed information about the system so far. Kevin broke a shocking news to Lin Hong.

"aURORA? Satellite monitoring?

Hearing the news, Lin Hong subconsciously looked up at the sky. He felt very uneasy when he thought that at an altitude of tens of thousands of meters, the satellite telescope might be aimed at him and transmit his image to the monitor of a computer.

What other secrets are there in this world?

"Ha ha, in fact, it's not so exaggerated. These monitoring may be effective for ordinary people, but it is a very exciting thing for hackers. The game of cat and mouse is very exciting, isn't it? Of course, your technology must reach a certain height, and you have to pay attention to hiding yourself. Otherwise, if you disturb them, you will be on their monitoring list, which will be more troublesome.

Lin Hong can see that Kevin seems to enjoy the process.

They have reached the edge of the practice field at this moment. Kevin stopped: "As I said, we are the same kind of people. Sooner or later, you will take a road similar to mine. The exploration of the unknown world is fatal for us. You may have noticed it, but I still want to give you two pieces of advice to save some trouble and time for your future.

"Please say it."

"If you decide to take a 'freedom' path, hide yourself as much as possible and don't attract the attention of others." Kevin smiled and said, "Of course, if you want to live a fugitive life like me, just pretend I didn't say it."

"The second advice, or a suggestion: although the black box is ubiquitous and worth exploring, the largest and most mysterious black box is here." Kevin said and pointed to his head.

"Other people think that my hacking technology is very powerful. In fact, there are many people in the world who are more skilled than me. The reason why I am better than them is that my HACK is not their computers, but their brains.

"Over the years, FBL has also found my trace many times, but in the end it still passed by me. Even if I stand in front of them, they don't know that I am the person they are looking for. It's not that they are stupid, but that they have weaknesses in their hearts, and I am the one who is good at in The person... I think this is an art, the art of invasion, the art of deception, or it can be completely used as a discipline, social engineering!"

The first advice is that he is mentally prepared. In this world, smart people, especially those who want to get more freedom, must restrain their light and make themselves as close to ordinary people as possible, so that they can live a more unrestrained life. In fact, he has been vaguely aware of this since he was a child. After coming to the United States, many things he encountered made him have a deeper understanding of this. Especially after knowing Kevin's deeds and the existence of the SaS system, he made up his mind to pay attention to it as much as possible in the future.

Because, deep in his heart, he has already decided that he wants to become a hacker!

Kevin's second advice was beyond Lin Hong's prelude, and at the same time, he was deeply shocked.

HACK is better than the brain?!

Lin Hong looked at the young man with a beard in front of him in shock. He looked like he was in his twenties, but he seemed to have thoughts far beyond ordinary people. His eyes revealed a sense of madness at this moment.

"People's psychological weaknesses, instinctive reactions, curiosity, trust, greed and other factors are all B Zhao in this 'black box'. You will find that exploring the brain black box will be more challenging and interesting than any other black box."

Kevin turned around and took a deep look at Lin Hong: "You should have found the charm of it long ago, but it seems that you haven't made full use of your talent at all."

"The 'creator' of the human brain gives the greatest wealth to human beings. This is a treasure house with huge potential. So far, our excavation and utilization of it are still very limited. If you are interested, you can study it."

After saying that, Kevin and Mitnick walked towards Master Zhang Cheng with a drinking pestle, leaving Lin Hong standing alone in place, digesting what he had just said. ( To be continued