three times shuttle

Chapter 61
"In recent years, my mother has been running around for my father's case. Not only did she get no results, she also made her health worse and worse. Before going abroad, I wanted to find a chance to reverse the case and help her get rid of her knot."

"What crime did your father commit?"

"He worked in the IT department of a brokerage firm. He was accused of misappropriating 500 million yuan of client funds to speculate in stocks, with a loss of more than 600 million yuan. He was sentenced to 20 years and has served 13 years."

"How did your mother know that he was wronged?"

"My dad is very honest, and he didn't have the guts to commit such a big crime. After being arrested, he refused to admit it. In the end, he couldn't stand it anymore, so he signed the confession."

"You tell me the details."

"There was an old client of the securities company who moved to another city and changed his name. When he came to the business hall to modify the account information, he found that the balance on the account was incorrect. The broker was in a hurry and hurriedly checked himself.

Only then did I discover that the main program had been replaced, and there was a new account, which had been embezzling customers' funds for stock trading since half a year ago. "

"How did it take so long to find out?"

"This is the ingenuity of the new software. As long as someone inquires or uses funds, the system will automatically transfer money from the latter account to fill the hole."

"Understood, the loop mechanism is adopted, but the level of programmers is not high, and they have not considered that after the customer changes his name, different interfaces will be called when querying."

"Correct."

"Obviously the ghost did it."

"At that time, there was just a local area network. There were more than 20 people in the IT department, and the management was loose. Five people shared a system administrator account, and they could tamper with the running programs."

"Check surveillance?"

"At that time, there were no cameras at all, and the police could only control five people."

"Check the owner of the bank card corresponding to the account, and the withdrawal record?"

"It's a bearer card. The criminal didn't steal the client's principal. He just wanted to embezzle funds and make money by speculating in stocks. But he was unlucky, and he was exposed just before the market rebounded strongly."

"He has been losing money and has never withdrawn money?"

"Yes."

"How do you confirm that it was your father who did it?"

"My dad had a classmate who started a company and went bankrupt. He was arrested after running away, and he voluntarily confessed that my dad once said that he wanted to make money in stocks and help him pay off his debts."

"Have you given him money?"

"I borrowed more than 1 yuan to Baiyanlang."

"It can't be a crime."

"Yes, so I found another piece of evidence. About seven or eight colleagues claimed that before the mainframe running program was replaced, my dad often worked overtime in the computer room.

In this way, the time, place, conditions, and motives for committing the crime are all available, and it is reasonable to arrest him when no other suspect can be found. "

"Well, it's really suspicious."

"More than ten years have passed. Things have changed and people have changed. It is difficult to find evidence. Please help me find a way. I am at a loss."

"The classmate who went bankrupt and ran away was the first person who pointed the clue to your father. Can you still find it?"

"Well, after five years in prison, he was released on medical parole in the second year, and died of illness a few years later."

"The other four people who hold the system key, and those who testify against your father working overtime, do you have any contact information?"

"My mother has seen them all these years and has their mobile phone number."

"Okay, use your spirit of helping the lover of your dreams to catch the mistress, hack into the phone one by one, check the emails and chat records of the year, etc."

"There was no social network at that time. As for email, I can use it, but I'm sure it will not involve private content."

"What communication tool did you use then?"

"Landlines, BP machines, rich bosses use mobile phones."

"Will the operator keep the call records?"

"There should be, right? But in the past so many years, whether it has been cleared or not is unknown."

"Do you know the number?"

"My mother has the address book of the securities company in the past, which contains the BP machine and the family landline number, and later she added the mobile phone number."

"Then start working and hack into the operator's server first."

"I'm afraid it's not easy. A few years ago, they spent huge sums of money to build a firewall."

"Then start with the database instead."

"how to do?"

Ning Chengfeng pondered for a while, and said, "Enter the operator's official website, check the open directory, and allow anyone to access the database?"

Jiang Duo checked one by one and sighed: "These loopholes have been plugged."

"Don't give up easily, go back to the user login page."

"and then?"

"In the username and password fields, enter the special code I told you last time." Ning Chengfeng tested his apprentice.

"SQL injection attack?"

"I still remember, not bad."

"You can't learn for nothing." The scumbag was a little proud.

"Look, the protection awareness of the city-level operators is still not strong, and they have successfully logged in. Give it a try, what are the access rights granted by the system?"

"Ah, this is too casual, it's actually an administrator authority."

"Find the communication records of relevant BP machines and landlines before and after the incident."

Jiang Duo was busy for a long time, frowned and said: "No, the historical data is backed up on the hard disk and has not been uploaded."

"You have to figure out how to get IT to import the information into the database."

"I'm not someone else's boss, how can I let him do this?"

Ning Chengfeng remembered Lu Hao's trick for Shu Ya, and said, "Use AI to change your face, and pretend to be your boss to video chat with him."

"How to do it?"

After the senior hacker explained, Jiang Duo pondered for a moment and said, "It's too complicated. People nowadays are relatively simple. There is no need for video, just imitating the sound is enough."

"That's easier."

The two quickly found the head of the IT department, hacked into his mobile phone, obtained the voice library, and then synthesized the voice.

This person has a business trip plan recently, and when he checked into the hotel, Jiang Duo forced him to replace the Internet phone number with the hotel switchboard number, and dialed the IT administrator's cell phone.

"Xiao Chen, I'm Lao Qin."

"Boss Qin, what do you want from me?"

"I was notified to cooperate with the investigation of an old case. You immediately upload the communication records of the BP machine and the landline in Youzi District in 985 to the server, and delete it at ten o'clock tomorrow morning."

"A letter from the assisted investigation is required."

"They have already given it to me. When I come back from a business trip, I will keep it for you."

"Okay, how do the police access the database? Should I copy it?"

"Don't bother, I will provide a temporary access key and let them extract useful data by themselves."

"Understood, I'll deal with it right away."

After hanging up the phone, the two of them waited patiently. In less than an hour, they downloaded the information they needed.

"With call records, how do I check them?" Jiang Duo was a little confused.

"Real criminals are either out of money or already in debt."

"People who are short of money will borrow money from relatives and friends who have money; those who owe money will be constantly pursued by others."

"If he goes around borrowing money, the police will definitely notice him."

"That means they are already in debt, and there are not many creditors, and they are not acquaintances. It sounds like usury."

"What organization uses loan sharks?"

"Guarantee company, but at that time, there was no such thing?"

"No matter how much, let's analyze, if the creditor contacts the debtor, what are the characteristics?"

"I will keep calling or sending messages to collect debts."

"People who borrow money don't reply one by one, only respond occasionally."

"Just look for anomalies based on these two characteristics."

Jiang Duo worked hard for a long time, but found no useful information. "What should I do?" He frowned.

Ning Chengfeng pondered for a moment, and said: "Anyway, everything is ready-made, so we should simply expand the scope of the search. Since it must be an insider, let's check all the employees of the securities company."

Hard work paid off, and the two finally found a suspect.

"Fan Li, the deputy director of the Investment Banking Department, has experienced these two situations many times, and there are even calls from overseas to find him."

"It's an interesting message, 'You guys don't keep calling me on the BP.'"

"It shows that he is very cautious."

"Note, he said 'you', not 'you'."

"Does he owe a lot of people money?"

"The creditor is unlikely to invite him to contact him. I think he may owe money to an organization."

"This confirms the previous conjecture. I hacked into Fan Li's phone to see if there was anything abnormal." Jiang Duo tossed for a long time, then shook his head and said, "All chat records have been recovered, but nothing useful can be found."

"This person is too suspicious, we have to think of a way."

"Seven or eight years after the incident, social networks appeared, and the content of the previous calls could not be found at all."

Ning Chengfeng suddenly remembered that when he helped Wen Wan back then, he used his soul to attack the plainclothes policeman, and hurriedly asked, "Jiang Duo, you have practiced 'Xuanyuan Sitting' for so long, can you influence others with your thoughts?"

"how can that be?"

"try it yourself."

"Old Wan next door goes to bed early, so I send a thought to get him to wake up?"

"can."

The results are frustrating, and the target is still asleep.

Ning Chengfeng thought for a while and said, "Empty your mind and don't think about anything. Let me try, can I use your weak soul power?"

He tried it, and he could put it out for a short distance, and even slightly moved the teacup on the table, but he couldn't penetrate the wall.

"You look up Fan Li's daily schedule and see where he often goes?"

"He likes mahjong and plays it at least three times a week, most of which he goes to 'Xinyu Teahouse'."

"Okay, go there and wait for him."

"Are you going to cast a spell on him in public?"

"Don't worry, I will be careful and not expose myself."

Two days later, at 23:50 in the night, Fan Li, who had fought fiercely for more than five hours in the Xinyu tea house and lost money again, walked out of a private room with three Ma friends with a tired face.

Jiang Duo was sitting in the hall, very close to the aisle, drinking tea while "playing with his mobile phone".

Fan Li's cloudy eyes suddenly lost his focus, and after three seconds, he said: "Old Qian, you go first, I still have something to do, make a few phone calls before going back."

"You don't rub my car?"

"No, I'll take a taxi home."

"It's so mysterious, can't it be raising a mistress?" A ma friend joked.

"You think too much."

Fan Li lay down on the sofa in the lobby, closed his eyes and meditated, an image of an old colleague appeared in his mind, it was Jiang Quan, the person he couldn't forget.

"Fan Li, you made me miserable." Jiang Quan's face was pale and his eyes were stern.

"Old Jiang, why is it you?" Fan Li was taken aback, and had a conversation with Ning Chengfeng in his mind.

　The character of SQL injection attack is not allowed to be displayed.

　　
　
(End of this chapter)