Battlefield Contractor

Chapter 6328: Confidence

The computer on the desk beeped, and Lin Rui turned around and asked Cobain, "Is there a problem?"

"No, a cracking step has been completed. It seems that we may be lucky. Look at the wall."

Lin Rui narrowed his eyes only to notice that a part of the wall protruded, forming a circular opening, about the size of the tip of his thumb. "That's a data port...or some sort of dedicated data port for maintenance engineers. I'm getting the switching from there on shortwave and infrared. Take my hacked computer out and plug it in there," Cobain said.

"Are you sure? The alarm won't be triggered, right?" Sergey couldn't help but ask.

"Although I can't play any role in combat, I have already cracked the last firewall. Once I have a direct connection with the communication network, I can infiltrate and take over their systems; at the same time, I may be able to control the subsidiary systems, give You buy enough time. But it looks like you still have to go to the vault and manually let me into their control system."

"As long as you're sure."

"When was I not sure?" Cobain was a little angry. The security system was really tricky, and his impatience could be felt.

Lin Rui took out Cobain's data chip from the slot, which is a **** he designed for brute force cracking. Lin Rui plugged the chip into a hidden data port on the wall.

Sergey showed a look of disgust on his face, and said in a low voice: "This is the reason why I hate the protection of modern technology. There are always many technologies that I don't understand. This has made our traditional craftsmanship less and less respected." gone."

"Shut up." Lin Rui waved his hand at his neck and made a chopping motion, and the Russian fell silent immediately.

"Okay, I'm going in." Cobain whispered.

"How's the situation?" Lin Rui asked.

There was a pause of half a second. "It's a little bit different than I thought...but it's not a big deal," Cobain replied.

"Okay, hurry up." Lin Rui motioned him to continue.

"This algorithm is too different from what I thought." Cobain muttered to himself.

Cobain's cracking device was purpose-built for hacking software. Every trick and code-breaking algorithm devised by U.S. Cyber ​​Operations Command was programmed into him, and he mastered many more in his own right. Cobain was the ultimate thief and electronic spy. Now he has slipped into the heavily guarded security system.

I thought it would be difficult to get in, but it was easy after entering the security system for the first time. At that time, Cobain put their monitoring system in self-diagnostic mode. This would cause the system to self-check and quickly reset the system - but this would have given them valuable time to get into the vault.

"How's the situation?" Lin Rui asked. Now Cobain's surprise has disappeared, and the security system's anti-intrusion system is on high alert. He stared at the screen, and seemed to feel that there was something patrolling the system right now, that thing seemed to be probing the intruder's hiding place with a tiny probe. After exploring for a while, it shrank back.

It feels like something else is wandering through the system. Is an artificial intelligence? Intelligence reports never mention the use of artificial intelligence in security systems. This possibility piqued his interest.

"It's different from what I thought…," he finally replied. "The security system has a self-checking program, which is highly intelligent. But AI is always AI."

Cobain scanned the code stored in the system, then quickly escaped the surveillance system, picked a path, and stored it in the third-level system cache. Let certain blocks perform multiple tasks at the same time, and then continue to analyze the structure and subsystems of the security system.

Cobain controlled all the surveillance cameras outside. When he checked, he found twelve teams of armed guards sweeping the corridors. They walk down the corridor: everyone's information is displayed on the security system.

"This security system has a sub-system. In addition to surveillance cameras, every security personnel has a similar tracking device. This shows that our previous intelligence is correct. The security personnel here are all wearing special shoes, so you can see Accurately judge their personal situation. Once they encounter an accident, the security system will find out immediately." Cobain whispered.

"Their routine inspections have begun. But we are in the office of the head of security, and they won't come in unless they have supervisory authority." Daniel whispered. "At least for the time being we're safe. As long as there's no commotion, they won't be able to find us."

Cobain nodded, "I have now controlled all the camera surveillance. When you are in action, I can slightly adjust the surveillance angle to ensure that you are outside the surveillance. In addition, I can upload the guard's azimuth coordinates to your tactical tablet. Go on. After they finish their patrol, you can start to act. At this time, the monitors and sensors are set to loop.

The guards will change shifts within fifteen minutes at most. The monitoring problem is solved, just be careful yourself.

"Nice job. Can the alarm be turned off? I want some security when it comes to unlocking the lock," Sergey asked.

"Yes, but only for three minutes. After three minutes, the system will automatically restart and restore the alarm again. So it can only be used at critical moments." Cobain replied.

"Well, although it's disappointing, it's better than no protection at all." Daniel sighed.

Fifteen minutes later, the security patrol ended. Lin Rui and his team members walked through corridors and highly protected biometric scanning arches, and then set foot on the passage leading to the interior of the vault.

They left Cobain in the office, closing the archway behind them. This is to protect Cobain, and he has more ways to assist them by staying in the office.

Lin Rui and the others came to the outside of the vault, and three meters to the left was a slightly curved white wall. There are no doors on it. Behind the wall is a highly secured vault.

"Is this the Federal Reserve Bank's vault?" Sergey whispered at last. "It's kind of exciting to think about. You think there will be something valuable in it."

"I don't know," Daniel replied. "Before I met you, I never thought of going here."

A door appeared in the white curved wall, and Sergei went there. "Come here, gentlemen, here it is."

Everyone who tries to enter the vault must be scanned by an iris eyeball camera. The camera has stored the irises of the eyes of each of the vault's internal staff in advance. After scanning, the computer will check the records immediately. Once the corresponding iris record cannot be found. The library door refuses to open for you and at the same time sounds an alarm.

But because of Cobain's control of the security system, the iris scan has been turned off. Otherwise, they are really difficult to handle.

They enter the room. When Lin Rui stepped into the room, he felt a heavy sense of oppression. The sunken shiny walls in the room always make people lose their sense of direction. And the huge circular metal door is even more oppressive.

This underground 5-storey vault is 25 meters below sea level, deep into the ground of New York City, 30 feet lower than the New York City subway system, surrounded by huge granite, forming an unbreakable natural barrier, and then building the New York Federal The headquarters building of the Reserve Bank is equipped with strict and advanced security measures, like an underground bunker.

Now they are facing the famous "door lock" system.

In this complete "door lock" system, the door frame is a reinforced concrete member weighing 140 tons, and the door is placed inside the door frame. It is two semicircular steel cylinders weighing 90 tons and 3 meters long. There are tracks and a narrow passage in the middle. Demonstration by the staff: through a certain mechanism, the cylinder will rotate. When it turns to a certain angle, the two semicircular cylinders will coincide to form a complete circular cylinder, and the door of the vault will be closed.

This lock can be manually set the time, after setting the time for unlocking, once locked, the door cannot be opened until the set time.

The world's top security system, all kinds of bright and dark cameras and monitors are everywhere. It is said that since its completion in 1923, it has never been broken into. There has never been a robbery. It's not that the thieves don't want to, it's just that the security of the Federal Reserve's underground vault is impeccable. Facing such a powerful defense system, let alone a living person, it is estimated that even mosquitoes would find it difficult to fly in.

"There are three locks on the door. The keys to unlock them are kept by the bank management, accounting and security departments." Daniel turned to look at Sergey, "Look at you. There is no key in this lock, so it can't be opened at all. Pry it The lock time is not enough. I can't think of any way to open the door."

Sergey didn't dare to be careless. Crouching down to observe carefully, he finally whispered, "Believe it or not, I can open it in just a few minutes?"

"How to open it?" Daniel hesitated.

"First, I want a sledgehammer." Sergey took a few steps and looked in the corridor outside. Of course there was no sledgehammer here, but he took a fire ax from the fire cabinet on the wall.

Daniel looked at him with an extremely mocking expression on his face. "You want to use this ax to split open the door of the vault. Shall I tell you that this thing can be a whole piece of cylindrical steel. A cylindrical steel more than ten meters thick. Do you want to use an ax to leave it?"

"Yes." Sergey walked over with the blunt ax in hand.

"You don't really intend to do this, do you?" Black Mamba couldn't stand it. Although he believed that Sergei must have a way, he didn't believe that he would really use an ax to hack the door.

"That's what I intend to do." Sergey swung his ax and slashed down hard. Once, twice, everyone was dumbfounded. How stupid is this to do such a thing?

But soon the expressions on their faces became extremely exciting. Surprised enough to hold an entire egg in Daniel's mouth, he stared blankly as Sergey hacked off a chunk of metal with the axe, and then another chunk.

This broken axe, is it some magic weapon? Can actually cut down a solid piece of steel?

But this is obviously a fire ax that was handy? Daniel felt that his brain was about to fail.

Only Lin Rui remained silent, as if he knew the result a long time ago. "Hurry up, we don't have much time."

Sergey nodded, and then slashed fiercely. The metal door of the safe was actually chopped off by him in big chunks.

Daniel picked up a large piece of metal and held it in his hand, startled. "Here, what's going on here?"

The piece of metal in his hand seemed very unusual, it would soften when he squeezed it with his hand, and pieces of residue fell from his hand.

"This door was destroyed beforehand, that's why Sergey is so confident." Lin Rui smiled slightly.

"But, when did this happen? How did it happen?" Daniel was shocked.

"A few days ago, Aladdin sent someone to spy on us. They found someone to enter the vault, and while the security personnel were not paying attention, they used something to destroy the door." Lin Rui explained. "A gallium metal."

Metal gallium is the 31st element in the periodic table of elements, belonging to group IIIA, which is the third main group, and is the same door as the common metal aluminum. The melting point of metal gallium is very low, only 29.76 degrees Celsius. As long as the environment is slightly warmer, it will become a liquid metal like mercury. Therefore, people are too hot for gallium metal, and they will melt if they hold it in their hearts.

Moreover, gallium is highly adhesive and may remain on tabletops, gloves or skin, leaving black marks.

If you drop liquid gallium metal on an aluminum can, it won't take long for the aluminum skin that touches the gallium to become thinner, and it will break with just a light poke.

Not only aluminum, but other metals, such as iron, copper, zinc, etc., will also be "corroded" by gallium metal. A lock that is dripped with gallium metal can be broken apart in a few hours. However, this does not mean that metal gallium is really acidic and can be corroded. After all, it can be placed on human hands very well. In fact, this so-called "corrosion" is related to the internal structure of gallium metal.

The solid we see is actually a form maintained by energy, and the cohesive energy of the solid is needed in this process. A solid is a combination of atoms. Each atom needs to release energy to unite everyone. The more energy the solid is, the harder it is to melt, and the higher the melting point. The atoms in many metals are very united, forming metallic bonds between them, and forming a very tight unit cell structure.

But gallium did not take the usual path. Its atoms actually made a decision against their ancestors and formed a covalent bond!

The atoms in the original metal crystal are arranged in an orderly manner, which leads to gaps between each atom. When liquid gallium is added, the disorganized gallium atoms will "seek through the gaps".

When other metal atoms meet gallium atoms, they will be "disintegrated" from the inside to the outside by the gallium atoms, changing the structure of the metal crystal. It's no longer the tight crystal structure it once was.

So in essence, it's not that the gallium metal corrodes the metal, but that it breaks the original metal bonds, forms new chemical bonds with them, and changes the structure of the metal crystal.

A few days ago, Aladdin's people secretly sent someone to check the vault in advance on the pretext of renting the safe, and smeared metal gallium on the door by the way.

After a few days of reaction, it was enough to make the surface of the metal door as soft as bread. This is why Sergey and Lin Rui are confident.