"Is that him?"

Sun Cheng's smile froze, and his eyes flickered.

He knew the owner of the voice, and he knew him very well, it was one of his roommates in college for a few years, named Liu Kun.

If Liu Kun had come to see him in the bedroom a few days ago, he would have been so happy that he would have been embarrassed.

But now!

took out the USB drive from his pocket, held it in his hand and played with it lightly for a moment, before he got up and walked towards the door, "Here ......

After greeting him, Sun Cheng rubbed the muscles of his stiff face, and only after a moment of brewing that his face was full of smiles before he opened the door to the dormitory.

The next moment, a young man wearing a casual robe with a seven-point head appeared in front of Sun Cheng, who was his former roommate Liu Kun.

"Ah Cheng, how did you do it? I have not responded to your call, and the mobile phone is down in arrears? ”

Liu Kun walked in with a bag of fruit, skillfully placed the things on a blank computer desk next to Sun Cheng, and then looked at him and asked with concern.

"Don't mention it, I was in a bad mood last night, and I drank some wine and dropped my phone!" casually made up an excuse, and Sun Cheng pretended to be annoyed.

His Apple 5 is still in another world, so he doesn't worry about being debunked at all.

There was a smell of wine in the bedroom, Liu Kun followed the taste, and sure enough, after seeing a few cheap small bottles of Su wine in a trash can next to him, he didn't seem to have any doubts, but persuaded him gently: "You, don't drink if you're in a bad mood, as long as you make a phone call, can I not come out with the boss and the fourth to accompany you?" ”

This familiar and warm conversation made Sun Cheng feel guilty suddenly.

"I should have thought too much", he comforted himself so much, but he didn't dare to look at his friend who he had known for a few years with that kind of scrutinizing gaze, and even when he looked at him inadvertently, he had the urge to turn his head away from it.

At that moment, he took the opportunity to invite him in and sit, and Sun Cheng also began to doubt whether his friend's behavior was too villain because of a Trojan horse.

With a little guilt, Sun Cheng was busy pouring water for him and moving the bench for him, a wave of enthusiasm made Liu Kun feel uncomfortable, and after sitting down, he said with some patience: "You guy, what are you polite to me?" This is your bedroom, isn't it mine? ”

"Didn't you all move out? Now it's naturally half a guest to come back! ”

"It's not that we didn't ask you to move out together, the eldest and the fourth didn't have an awkward relationship with you because of borrowing money, and it's not that you always feel unhappy!" Liu Kun said: "How is it? Let's move in together. After all, it is still two or three months before graduation, so it is more convenient to live outside. ”

After saying that, he seemed to inadvertently glance at Sun Cheng's computer screen, and his face suddenly changed slightly, "You changed the system?" ”

Sun Cheng nodded, he was still guilty, but when he saw the change on Liu Kun's face, he couldn't help but wonder again, "It's just a different system, why is his reaction so big, is it really from his hand that the Trojan horse is from his hand as I guessed?" ”

At that moment, he quietly said: "Didn't my computer crash frequently before, and I didn't repair it when I went to the store to repair it, and I couldn't reinstall the system." Two days ago, I found a technical expert in the department, I asked him to help take a look, said that there was a Trojan horse in the computer, and helped me rebuild the system, which is finally good! ”

When mentioning the words 'reloading system' and 'Trojan horse', Sun Cheng, who had been paying special attention to the change in the expression on his face, sensitively caught a trace of unnaturalness, and his heart couldn't help but sink, and suddenly realized that his previous guess might not be delusional, and his roommate was very problematic.

Maybe there was a ghost in his heart, not long after Liu Kun sat down, he left under the pretext of waiting for something to happen.

As soon as he left, where could Sun Cheng, who was even more suspicious in his heart, sit still, and he couldn't wait to know the truth now.

After thinking about it for a while, Sun Cheng thought of where to start and continue the investigation.

It's a pity that he couldn't bring the mobile phone back from another world, which made him very uncomfortable, who was used to the convenience of the mobile phone.

Fortunately, Sun Cheng thought about it for a while, and quickly remembered that the person he was about to contact liked to play games.

Sitting back in front of the computer, Sun Cheng took a moment to find a game voice software that he had opened with you when you were playing games, and downloaded and installed it on the computer.

Then he entered his own account number, climbed on it and rummaged for a while, and sure enough, after finding the other party's account in the friend list, he was slightly relieved.

Seeing that the other party was actually online, Sun Cheng hurriedly clicked on the dialog box and contacted him with text: "Fourth, reply to me as soon as you see it, I have something to do with you!" ”

After clicking OK to send the conversation, after waiting for four or five minutes without seeing a reply from the other party, he suddenly understood that the other party might still be in the game.

I had to zoom it out to the bottom right corner of the computer and wait for the other party to find out.

Because he didn't know how long he would have to wait, Sun Cheng quickly moved his gaze away from the lower right corner of the screen and reopened the browser.

Tracking down the Trojan horse that inexplicably appeared in his computer was just for Sun Cheng to solve some confusion in his heart.

The thing he is most anxious about at the moment is actually to raise money as soon as possible and solve the bunch of debt problems that he tossed out of his previous business.

For Sun Cheng, although this is very troublesome, it is not impossible at all.

In fact, after an attempt in the afternoon made him sure that his current computer technology was very high, Sun Cheng had actually found a solution.

Quickly searched for an ios system exchange community, Sun Cheng searched carefully for a while, and finally found the latest version of the iOS system installation package in a post, he chose to put it down.

One of the ways he thought of making 100,000 dollars quickly was to get paid for finding bugs in Apple's ios system.

In September 2015, Zerodium, a vulnerability acquisition platform, issued a wanted warrant for ios9 system bugs, spending $3 million to reward the development of a browser-based ios9 system perfect jailbreak.

The bounty, which had been so noisy last year, ended at the end of October last year, when Zerodium announced that one of the hacker teams had successfully created a browser-based jailbreak for iOS 9.1/9.2, earning a $1 million reward.

However, although last year's bounty has ended, it does not mean that Sun Cheng cannot rely on it to make money.

Because it is clear that the jailbreak system obtained by the Zerodium bounty will not be sold to Apple in the end.

As the world's most popular mobile phone brand, some people are willing to pay a large amount of money to get more system bugs about Apple's mobile phone.

Unfortunately, Sun Cheng really knows a lot.

The iOS system is not perfect, which is an awareness that he has long had after using the Apple phone for a few years.

It's just that what really made him feel the myth was that a few days ago he was in another world, when he was thrown at a scrap yard on the outskirts of Washington by the barricade that went back to see the red spider, and used the enhancement function of 'confusion' to strengthen his Apple 5, Sun Cheng at that time also used the powerful intrusion ability of the [spy template] to completely crack every line of code in the iOS system, from which he found at least hundreds of various vulnerabilities.

Fortunately, when he returned to reality from another world, although Sun Cheng lost the powerful intrusion ability of 'Confusion', all the memories of those vulnerabilities were still there, and even under the influence of 'Confusion', the computer level also increased by leaps and bounds.

So, all he needs to do now is download the latest version of iOS from the Internet, verify that the vulnerabilities he found have been fixed, and then consider whether to sell them to Zerodium or directly to Apple.

The network speed in the bedroom is not fast, and the 1.4G installation package has been downloaded for twenty minutes, and the process bar has not been completed halfway, which makes Sun Cheng a little helpless.

was bored, and suddenly the computer in front of him made a 'Didi' prompt sound, Sun Cheng subconsciously looked at the lower right corner, and sure enough, he saw the voice chat software beating.

Hurriedly clicked on it and saw a set of replies on it, "I didn't respond to your call, why did your phone turn off?" What are you looking for me? ”

"Come to Master Wang to stir-fry, talk about it when you get to the place, don't tell the boss and the second, just come over alone!"

The chat software was silent for a while before resuming: "I know, it's half an hour coming!" ”