At the center of the hull is a 100-square-meter cabin. According to the structural diagram, it is the central computer that controls the entire ship. This has to be seen.

After swiping the captain's IC card, the display near the hatch reacted.

"Please enter your password."

Looking at the green words on the screen, Nan Xiao entered a state of daze. I've really seen your ghost, why do you still need a password after swiping an IC card? It's not scientific!

The captain had a small diary with a lot of memo stuff, but it was very sloppy and in Russian.

Fortunately, the mobile phone can translate Russian, which is not smooth but can be understood. After flipping through it, Nan Xiao found that an eight-digit password was needed here. The first seven digits are found in the diary, either numbers or letters, but the damn eighth digit is not. It can't be helped. The captain wrote it to himself, and there was no way to leave a pit for him.

Twenty-six letters and ten numbers for a total of 36 choices.

Nan Xiao bet that it was absolutely impossible for him to calmly try and make mistakes more than thirty times.

What to do, I can only find a way to brute force it.

After touching up and down for a while, he really found a little way. There is a steel plate near this display, which is obviously different from the surroundings. He pinpointed the seam and pried it a few times, and sure enough, it was loose. After a little more prie, the fastening screws slipped. With a hard effort, the steel plate was completely cut off, revealing the circuit board inside.

Seeing the familiar circuit board, Nan Xiao couldn't help but think of the days of Vault 101. There, I was forced to learn a lot about electrical circuits. Check out these lovely capacitors! This beautiful pin! This neat chip! He touched the circuit board. Wow, this feel, this touch...... It's been a long time since I've touched a hardware circuit, and I'm really nostalgic.

Eerie shelters, days and nights spent alone......

That's how growth comes from, three years of loneliness, I have no regrets!

After studying the circuit board for a while, Nan Xiao once again confirmed that there should be no difference between the physical principles of this world and the radiation plane. At the very least, digital circuits are designed on the same principle. For example, this jumper, which seems to be for maintenance personnel to debug, can definitely do some articles.

Pip-boy, from Vault 101, Nan Xiao tinkered with it when he had nothing to do, and he was already familiar with it. It happens to have a wire that specializes in cracking circuit boards, and it was born to do this job.

Plug in the jumper, and after a commotional operation, a flashing cursor appeared on the display of the beep boy. Nan Xiao was excited, the familiar command line mode is here!

The next step is to master the basics. Log in in maintenance mode, set the password file permissions to open to yourself, and then open the password file in debug mode......

After breaking the code of Vault 101 countless times, Nan Xiao is simply familiar with playing these things. The password file was filled with piles of gibberish, and he simply ignored it. Only those meaningful words were legitimate password combinations, and he knew that for a long time.

On the screen, there are a total of 17 groups of valid password combinations, all of which are short sentences with a group of eight words, which can be entered by moving the cursor to select any sentence.

There are only three chances to beat the level. However, after some searching, Nan Xiao found that there were four groups of the top seven matches! What to do? means that there is a possibility of failure.

With the idea of trying his luck, he tried a group casually.

"Didi!"

A relentless line of prompts appears on the screen: There are two chances left.

Is it so declining? He tried another set.

"Didi!"

Oh, there's only one chance left. If it's wrong this time, maybe the ship will explode. It's not a joke, just now when he cracked the password file, he found some words in the garbled code, which seemed to mention that there were self-destructing bombs on the ship.

The on-screen warning flashes repeatedly: Misenter again and the system will lock up and enter an indescribable state.

Rubbing his face, Nan Xiao tried to calm himself down. Don't be afraid, think about the experience of cracking all kinds of circuit boards in Vault 101, this thing will definitely leave a back door!

After carefully studying the wiring, he boldly created a short circuit between the two capacitors. This small action doesn't help cracking the password, but it should break the chip's counting operation for mistyped errors.

It should be ok?

A voice in my heart questioned: Are you sure? If the count is not broken, the wrong choice is over. How sure are you?

…… Let's open it in five.

If you are only 50% sure, do you dare to take risks?

Otherwise, you can only gamble. Big or small, just roll your eyes and stare at it.

Nan Xiao chose the third set of passwords almost with his eyes closed.

"Didi!"

Error again, failure again! It's over, it's going to die, it's going to die!

However, there was no sound of bombs exploding, and everything was as usual. He boldly looked at the screen, and found that the error count had really stalled, and it was still stuck at the last time.

yes！ The broken circuit board was really deceived by the bird!

Then there is no suspense. The first three sets of mistakes have already passed, and the remaining group is naturally the correct password. Sure enough, after selecting the fourth group and pressing confirm, the small horn on the hatch circuit board called "Ding Dong". Although it was just a very simple midi sound, it was no less than a heavenly sound in Nan Xiao's ears.

After the certification is passed, the next step is the green light. The system has switched to login mode, and the prompts are swiped in rows. Soon, Nan Xiao logged into the ship's management system as an administrator. Root access! He skillfully rubbed his hands and showed a very bad smile: Wait for the whitewash, the uncle is here!

Nan Xiao wants a lot, not just to open this door. It was not easy to break the management system of this ship, of course, it was necessary to carry out it thoroughly and leave no trouble.

The cursor flashes on the screen. The system has given up resistance and is waiting for the blessing. I'm sorry, but getting root access means you can do whatever you want. He immediately opened a new account for himself, gave him the highest authority, and then changed the owner of the captain's IC card. Other accounts in the Administrators group? Cut them all! What is the factory-preset backdoor connection? Delete them all! An open port of unclear significance? Seal them all! and regular data exchange with the bases of the Northern Fleet? Strictly forbidden!

In the blink of an eye, the ship became a data island, and the connection with Lucia's base was completely erased. There is no one on this ship with higher authority than Nan Xiao.

At the end of the cleanup, I found something interesting.

There are some text files left in the system administrator directory, the last date being yesterday. Nan Xiao opened it casually and found that it was left by the captain. I really didn't expect that the captain would secretly write a diary in the system administrator directory. Probably he thought the directory was very secret, and no one but him could gain access.

08/15/3102 22:38:34

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The day after tomorrow will be Natasha's eighth birthday. While it's not good to use precious bandwidth to transfer private files, I still recorded a video wishing her a happy birthday. As a captain, you should have this little privilege, haha.

In addition, the birthday present is also ready, so let's give it to her when we return to the port after this mission.

Notes: Gifts are kept in a personal locker in the captain's room.