When Yanyu Shao contacted his master, Yan Guo was on annual leave and traveling.

Shortly before Yan Guo left no trace, he was promoted to the head of cyber security of a bank, responsible for the security of that bank's online banking system. In the past year, he has washed his hands and is no longer involved in online hacking activities.

After becoming a supervisor, there are more things in all aspects, and there is less research on purely technical aspects, but he is not out of touch with the circle, and those who do network security must keep up with the trend of technology. After listening to Yanyusha's story, he was even more shocked than Yanyusha, which was simply impossible.

At the level of Yan Yu Shao, the top masters are always so mysterious and master omnipotent techniques. But when it comes to the level where the geese pass without leaving a trace, there is no mystery in hacking technology. All the means, all the ways are nothing more than that, the so-called clever is just to prescribe the right medicine, understand the situation of the target computer, and make targeted deployments.

The protection software used by the apprentice was developed by himself, integrating his own understanding of network security, and it was easily broken through, which made him feel terrified when he thought about it.

The security system of his own bank was also developed under this idea, but it was more powerful, and if that person wanted to hack into the bank, the chances of success might be quite high. Yan Guo broke out in a cold sweat without leaving a trace, and immediately ended the tour, he felt the need to meet the poster of "Free World" for a while.

As soon as Yan Guo returned to Donghai City without leaving a trace, his mobile phone rang, and he looked at the screen, it was his friend Lone Leaf Piaoling calling.

There are only a few top people in this circle, and he and Lone Leaf Piaoling have known each other a few years ago and have become familiar friends. Lone Leaf Piaoling is the vice president of the technical department of a large online shopping platform in China, and is responsible for network security full-time.

"Old Goose, have you heard of that guy from the Free World? What do you think? "Since they spend most of their time communicating online, they also have a habit of saying their online IDs when talking on the phone.

"Yezi, I was about to call you too. Seriously, I'm worried that if this guy were to hack into the bank, he might be able to succeed. ”

"Again, if he were to hack into a shopping platform, I wouldn't be able to. He should have mastered one of the deadliest vulnerabilities in the system that was not made public. ”

Yan Guo took a breath without leaving a trace, and said, "Let's join forces, try?" ”

"That's exactly what I mean."

……

That night, Bai Yunxiao rushed to Yanyusha's studio and saw that in addition to Yanyusha, there were two men in their thirties.

These two people, from their dress to temperament, exude the meaning of corporate executives.

Yanyu shook his smile and introduced: "Xiaobai, this is my master who has left no traces. ”

"Ahh Bai Yunxiao jumped up, holding the right hand of the wild goose without leaving a trace with both hands, and shook it violently, "It turned out to be the god of the wild goose, and the name is really like thunder." ”

Yan Guo smiled without leaving a trace: "I have seen your branch post, and the level has improved very quickly, and it is almost the same as ours." But you're still young and there's a lot of room for improvement. ”

Yanyu shook and said: "This is the predecessor of the lonely leaf." ”

"Ah, another great god!" Bai Yunxiao was stunned, "I fought with Ye Shen last year, and I was very impressed." ”

Lone Leaf smiled and said, "If I fight again, I'm not sure I can win you." Progress is fast, and the future is terrifying. ”

If the people of the "free world" knew that the four of them were together, it would inevitably cause a huge sensation.

Bai Yunxiao looked at Yan Yuyan suspiciously, and Yan Yuyan said: "Master and Ye Shen came here together to meet the master who was recruited in the forum later. ”

Bai Yun Xiaoden was extremely excited, the three best gods in his mind were about to start a peak battle. I was lucky to have the privilege of being a spectator. However, how can the Wild Goose God and the Leaf God have the meaning of joining forces, two against one, which is a bit unfair.

Just when Bai Yunxiao was stunned, Lone Leaf Drifting and Yan Guo Leaving No Trace had already begun to act, and they turned on their laptops and connected to the studio's network.

"Don't be stunned, we can also wave the flag and shout on the side." Yanyu shook his head.

Bai Yunxiao came back to his senses and began to open the laptop he brought and connect to the Internet. There are several servers in the studio, and the network is an exclusive 100M bandwidth for optical fiber access.

All four of them sat in front of the computer, and the room was quiet, except for the slight sound of the computer cooling fan and the hard disk turning, only the ticking of the keyboard and the tap of the mouse. Details determine success or failure, and the habit of detailing developed over the years will not change, they meticulously debug the computer, open all kinds of hacking software, disguise the IP, and then through the heavy springboard, carefully scanning the target.

Lone Leaf Piaoling frowned and said: "The ports that should be opened normally are all open, and they look completely unguarded, what are you going to do with Lao Yan?" "It's a bit like a martial arts master, his whole body is full of flaws, but it's not easy to attack, it seems that every flaw is a trap.

Yan Guo said without leaving a trace: "Ye Zi, you attack head-on to attract the attention of the other party, and the three of us sneak in in a roundabout way." Ready to go? Okay, let's go. ”

Lone Leaf's fingers danced on the keyboard as if he were playing the piano, so fast that his eyes couldn't see clearly. As he worked, countless zombie computers sent massive requests for data. This torrent of data floods into the target server, slowing down the server.

At this time, Li Hao was in the newly bought house, and after cultivating the Force, he was learning alien technology. Brain suddenly issued a warning: "An attack on a remote server has been detected, the attack is more violent than ever, and three users are trying to elevate their privileges at the same time." ”

Li Hao smiled and said: "It seems that there are masters out of the horse, so I'll play with them." ”

Lone Leaf looked at the feedback information, the server did not occupy much bandwidth, the network was blocked, and normal users could no longer access it. And the server surname can not be very good, it is estimated that there is a possibility of crashing in the near future.

But something strange happened, the server was just twenty seconds slower, and then it was back to normal. The server didn't know what method was used, and all the junk data was filtered out.

Even more surprisingly, Lone Leaf found that the number of zombie computers he could call was rapidly decreasing, and those controlled computers kicked him away and automatically cut off the connection. When I tried to connect again, I found that the back door I had left was gone, and the zombie computer had returned to normal and was no longer under my control.

In just a few seconds, thousands of zombie computers were out of their control, and none of them were able to connect through the back door again.

Lone Leaf Drifting looked at all this dumbfounded, "God, tell me what's going on. ”

At this time, Yan Guo shouted without leaving a trace: "Damn! The protection software on your computer pops up blood-red text: "Warning, the computer is under attack." warning, the computer has been compromised. Warning, an alien user is escalating privileges. Warning, an alien user has been granted administrator privileges. ”

These words flashed one after another, without any pause at all, and when the goose came back to his senses without leaving a trace, his hands were beating rapidly on the keyboard, and he wanted to delete the user, but he found that his permission had been reduced, and he had no permission to delete the other party.

"This ...... How is this possible? "It's incredible that geese don't leave a trace.

Lone Leaf Piaoling said in shock: "The other party used a supercomputer, so many of my zombie computers, all of them were restored to normal at once, how much processing power can this do?" Lao Yan, you analyze, what level of supercomputer is this? Our country's top Tianhe series supercomputers are nothing more than that. How could he control a supercomputer at this level? ”

Yan Guo did not leave a trace and said: "He is still tracking me at the same time, I have used a seven-fold springboard, and some of the springboards in the middle are developed by the reading power of the system, how can this be done?" Could it be that he can really control the world's top supercomputers? ”

Lone Leaf Piaoling was shocked: "Impossible, even if he really controls the top few supercomputers, he can't complete such a large amount of data processing in an instant." You know, my zombie computer is really terrifying. Unless he just let the supercomputer work for himself in the meantime. But is it possible? If he did, he would have been discovered. Supercomputers, there must be technicians on duty, such an abnormal situation, even the blind can find out. ”

Yan Guo said without leaving a trace: "Have you ever used a supercomputer?" Don't guess, the capabilities of supercomputers are not something you and I can estimate. ”