Liu Xiao was sleeping in a daze, the phone in the room rang, Liu Xiao got up and looked at the time, in the middle of the night, why did the phone ring, I don't know if it was Will or Hillar?

Liu Xiao picked up the phone, and heard a sound of rattling from the other side, Liu Xiao didn't understand, and wondered, could it be a mistake? Or is this hotel also like those hotels in China, someone comes to sell special services in the middle of the night?

Liu Xiao smiled, hung up the phone, turned over and lay down on the bed again, this must be a mistake, I know Will and Hillar here, they all know that they don't know Estonian, and they will definitely use Chinese or English that they can understand when they call, and the voice is not right, it is very unfamiliar.

As soon as my head was pressed against the pillow, the phone rang again. "Damn!" Liu Xiao secretly said evilly, this wrong call can also be made wrongly twice, got up and picked up the phone again, sure enough, it was still a chattering voice.

Liu Xiao was angry, so he said in Chinese: "You made a mistake!", after pouting, he originally wanted to say, "I don't need special services!", and finally changed his words.

The sound of chattering on the other side of the phone stopped, and it is estimated that the person was also stunned, what is this talking about?

Liu Xiao listened to the phone and didn't move, thinking that it was really a mistake, so he shook his head and was about to put down the phone, but at this time, a voice came from the phone again, which was in standard English: "Are you Mr. Liu? I am Mr. Hillar's assistant!"

"Oh......" Liu Xiao was stunned for a moment, and then reacted, the hacker attack really started, the time seemed to be a day earlier, so he hurriedly said: "I am!"

"Sorry to disturb you so late, Mr. Hillar hopes to see you soon, where are you now, we'll pick you up!"

Liu Xiao scratched his head, it seems that this hacker attack is more serious, otherwise Hillar would not be looking for him in the middle of the night, and then he said the name of the hotel where he was.

"Okay, let's go over and see you later, Mr. Liu!", the other party hung up the phone after speaking.

Liu Xiao was completely sleepy at this time, walked to the window and opened the curtains to look out, the protesters on the street were long gone, it was extremely quiet outside, and the entire city of Tallinn was sleeping. Liu Xiao turned around and turned on the computer in the room, visited several websites, and found that all of them could not be opened, websites outside Estonia could not be opened, several large websites in their country could not be opened, and even search engine websites could not be entered at this time.

"It seems that the situation is very serious!" Liu Xiao stood up, in this case, either Estonia cut off the link to the foreign network, or the flood of hackers washed away all the large routers, rendering them useless.

Liu Xiao pondered for a while, and felt that this matter was a bit strange; if Estonia cut off the link with the foreign country in time, then the data flood would not be able to come over, although their domestic network will temporarily become a "local area network," but it can ensure that the domestic network will not be lost, but now why can't all the domestic and foreign networks be opened? Liu Xiao just wanted to die, and it is estimated that Estonia had to close the link with the outside world after the hackers washed down the domestic network.

"No!" Liu Xiao went to the phone again, he had to call Will, he was called by Hillar in a daze, at least let Will know.

Liu Xiao picked up the phone and dialed the number, but there was a beeping sound on the phone, and he couldn't get through! Liu Xiao dialed again, but it was still a beep, and he couldn't dial it out at all, "Evil Sect, others can call in, why can't I dial out!" Liu Xiao put down the phone in surprise, could it be that the phone was locked, and he could only answer the phone, not make a call? No, he returned it to Will through the phone during the day. Liu Xiao had no choice but to take the hotel's internal line and ask the hotel to send someone over to check the line.

The hotel people quickly came, checked the line at the door, and said: "I'm sorry, there is no problem with the line, I think there may be something wrong with the telecom, and it is estimated that it will be solved soon." We'll let you know as soon as it's back to normal!"

Liu Xiao's head is wooden, it can't be such a coincidence, could it be that the hackers even crashed the telecom server in Estonia? "Okay, I'm sorry for you!", Liu Xiao was about to send the people from the hotel away.

As soon as he finished speaking, someone knocked on the door, and Liu Xiao opened the door, a person he had never seen.

"You're Mr. Liu, I'm Mr. Hillar's assistant!"

"You wait a while!" Liu Xiao said, turned around and hurriedly stopped the person in the hotel, "I want to leave a note, if Mr. Will comes to me, please help me hand it over!"

"Yes, sir!" the hotel man froze.

Liu Xiao sat in front of the desk, wrote a message with a few strokes, and then folded it and handed it to the hotel person, "It must be handed over to Mr. Will, thank you!"

"You're welcome, what we should do, if nothing else, I'll take my leave!"

"Okay!" Liu Xiao raised his hand, signaling that the other party could leave, and then quickly tidied up his clothes, picked up his leather bag and went out, and said to Hillar's assistant: "Let's go!"

As soon as he went out, Liu Xiao found that there were many people on the street that was still very quiet just now, and suddenly there were many more people, everyone was holding their mobile phones with a confused face, and they seemed to be unable to dial all of them.

Liu Xiao got in the car and drove out, and saw the police car start patrolling again, and people surrounded the police when they saw it, wondering what happened!

Hillar and the vice president had just arrived at the president's office at this time, and the president of Estonia was angry at this time, and when the two came in, there were still several people standing in the office, one of whom was the minister of the Estonian Ministry of Defense and Security.

Seeing the two of them, the president stood up, glared at the vice president fiercely, and then said: "I have already read the operation records of your computer response center, and Mr. Hillar's judgment was correct from the beginning, this is a premeditated and organized attack, the purpose of which is to destroy our country's network and create chaos!"

"President......" The vice president was sweating at this time, and he also understood what the president meant, and if it were not for his hesitation and wrong choices, Estonia would not have suffered such a big loss.

The president ignored him, pointed to the other people in the office, and said, "These experts have rushed from Germany and Israel, and they have brought us some clues about the attackers!"

A man in his forties took a step forward, "That's right, we also just received information, the intelligence mentions that recently, there have been underground hacker groups on the Internet to buy botnets at a high price, and there is evidence that this is a purposeful cyber attack against Estonia, and the other party has been preparing for this for a long time, and it is supported by unknown funds!", this is an Israeli expert.

"Can you find out who the other side is?" the president asked, pacing two steps, "Could it be that the Russians did it?"

The Israeli expert was obviously stumped, "It's hard to say clearly, anyone can possibly, but what happened on the Internet can be easily denied!"

The president was very annoyed, he suffered a big loss in vain, the whole country was made to jump, and he was also anxious, but he couldn't even be sure who the other party was, which was very embarrassing. In fact, it can't be said like this, because the president already has a rough plan in his heart, and he has vaguely guessed who did it, but what can this be, without evidence, anyone can deny it, it seems that Estonia can only suffer a dumb loss this time.

"This is already the case, now please ask the experts, be sure to restore the normal operation of the Estonian network in the shortest possible time, and restore the network connection with the outside world!" After the president finished speaking, he looked at Hillar, "You arrange a group of people to go all out to track down the source of the attacker, and you must find out!", in front of foreign experts, the president of Estonia must say a few cruel words, which is like a fight between two people, and the losing side will always throw down a sentence: "There is a kind of you don't go, wait!"

"Yes, Mr. President!" Hillar replied, but sighed inwardly, how easy it was, it was not the first time in all these years that such a thing had happened, and even if the location of the attacker was found, it would not be impossible in the end.

"Okay, then you can take the experts and get busy!" the president raised his hand, "Estonia's network is all up to you!"

Hillar left the president's office with the experts. As soon as the door closed, the president inside began to knock on the table, "Shame! Sad! Even the people in Israel know that there are hackers attacking Estonia, but where are our Estonian intelligence services and what are they doing?"

The minister of the Ministry of National Defense and Security had a sweaty face, it was indeed embarrassing, whether someone deliberately attacked his network, and in the end he had to rely on other people's intelligence to confirm, this time it was really embarrassing to throw himself home, and he couldn't help but curse the rice bucket under his hand dozens of times at this time.

"What are you doing in a daze?" the president looked at the Secretary of Defense and Security, "Are you waiting for the Israelis to give you another piece of information?"

"Mr. President, rest assured, this will never happen again!" the Secretary of Defense and Security saluted, then turned to leave, apparently he was busy.

The vice president was still standing there, not knowing what to say.

"You can go too!" the president looked at him, "I am very disappointed in your ability, and having you as my assistant is the most unsuccessful choice of my tenure, and perhaps those people in the council are right, you are only suitable to be the head of the kindergarten!"

Hillar returned to the Computer Response Center with a few experts, and by this time it was already dawning and police cars were roaming the streets, honking their horns to explain to citizens the reasons for the situation.

"Mr. Hillar!" Hillar's assistant greeted him, "Mr. Liu of the Soft Alliance has arrived!"

"Where?" asked Hillar.

"Where's in the conference room?" said the assistant, preparing to open the way.

"Everyone, let's go to the conference room first, there is a Mr. Liu from China, you must be interested in him!" Hillar raised his hand and led everyone straight to the conference room.

When everyone entered the conference room, Hillar became anxious and turned around and asked his assistant, "Where are the people?"

The assistant was also stupid, "I led him to the conference room, I have been guarding the door, how can this be!", the conference room was empty, there was no one, and the glass of water I poured for Liu Xiao was still on the table. Could it be that the person has not yet evaporated, the assistant hurriedly walked a few steps inside, and when he looked again, the heart that almost jumped out of his throat fell to the ground again.

Liu Xiao didn't leave, he felt sleepy after sitting for a while, so he put the chairs in a row, lay down and went to sleep, and everyone came in, because the table was blocked, so they didn't see him.

Hillar breathed a sigh of relief, walked over and patted Liu Xiao on the shoulder, and said softly, "Mr. Liu, Mr. Liu!"

"Oh......" Liu Xiao was awakened, and when he saw that it was Hillar, he quickly got up, the chair was too narrow, he got up too violently, and almost fell below, but fortunately, Hillar was quick and helped him.

Liu Xiao got up and rubbed his face, "Mr. Hillar, you're back, I don't know what you're looking for me for?"

"Sit down, sit down!" Hillar beckoned everyone to sit down, and then looked at Liu Xiao, "Mr. Liu, the last time we met, I mentioned that Estonia is a place frequented by hackers. Yesterday ZF announced the results of the handling of the Soviet Army Memorial Statue, and the hacker attack came immediately, to tell you the truth, it was very serious, the traffic of the other party's flood attack far exceeded our network capacity, and the networks of ZF, the parliament, and the bank were all washed down!"

"It's so serious!" Although Liu Xiao knew that hackers were going to attack, he didn't expect it to cause such serious consequences.

"Now we have closed the link between Estonia and the global Internet!" Hillar pointed to several other people, "These are all experts from other countries of the European Union that ZF urgently brought in!"

Liu Xiao nodded, not knowing what Hillar was doing to himself, and he was not an aid expert.

"Ladies and gentlemen, this Mr. Liu is from China's SoftAlliance Technology, I think you must have all heard of SoftAlliance!"

Several experts suddenly showed surprise, this *** is so big, the soft alliance made Sidney ugly at the black hat conference, and now it is simply the number one talk about everyone's after-dinner chatter in ***, plus those security agencies in Europe and the United States jointly slandered the soft alliance, and the name of the soft alliance is well known to everyone in ***.

"In this attack, all of our zf publicity websites have been washed down, but only one has magically resisted the attack of the data torrent!" Hillar finally said the point, "This website just adopted the new firewall of the soft alliance two days ago, I invited Mr. Liu to come over, just to ask Mr. Liu, this website has not been washed down, is it related to your firewall?"

"Oh......" Liu Xiao took a breath, it turned out that it was because of this matter, he said it so mysteriously, he thought that the firewall of the Soft Alliance had also died, "I can't judge this either!"

"Huh?" Liu Xiao's answer made everyone present fall through their glasses, and it turned out that Soft Alliance didn't even know its own products!

"After we designed the product, we tried to measure its maximum carrying limit, but unfortunately we gathered all our strength and failed to reach its limit value!" Liu Xiao shrugged, "We don't know how much data he can carry!"

This time, it was not the glasses that everyone fell, but the chin, which is too outrageous, how can you not measure the limit of the product!

"Well, let's take a look for ourselves, won't everything be clear?" Liu Xiao proposed.

Hillar immediately stood up, "Okay, let's go now!", not curious, but thought it was incredible, so he had to go and see for himself.

Experts from several other countries were also interested in this website that could survive the disaster, and everyone didn't say a word at the moment, went out directly, and drove to the building where Liu Xiao had erected the firewall last time.

It's still that computer room, the door slowly slid open, and Liu Xiao went in and saw that the computer he used to set up the firewall last time was still in that corner.

"I'll pull up the product's log and take a look, and I'll know what's going on!" Liu Xiao said, lighting up the computer's display screen, pressing a hotkey, and the firewall's operation interface appeared on the screen.

Liu Xiao clicked a few times, stared at the screen for a while, and said: "At 22:37 last night, the firewall detected that the network was tested by a flood capacity, because the traffic used by the other party during the test was very large, the firewall judged that the subsequent flood attack would be very fierce, and then launched an emergency plan, and turned on the attack source detection function in advance. ”

"Ahh The firewall accurately judged that the other party was tempting, not attacking, how could this be, and what was its basis?

Liu Xiao continued to interpret the log records of the firewall, "At 23:01, the data flood came, and in less than two minutes, the traffic reached 700 times the usual number of visits to the website, and the firewall judged that this was a real flood attack, in order to ensure the normal operation of the server, the firewall temporarily blocked all access requests sent to the server, and identified the source IP of the flood attack. Ten minutes later, the protective wall blocked two percent of the attack sources, the other party's traffic no longer increased, the firewall judged that the remaining flood traffic was within the server carrying range, then restarted the normal link of the server, the work of detecting the source of the attack continued, forty minutes later, the firewall completely blocked all the attack sources, and the server traffic returned to the normal level at the same time. ”

Hillar was amazed that the timing and the size of the flood flow were exactly the same as those detected by his own response center.

"For more than four hours, the other party's attack has been continuing, although there has been a sudden increase in traffic for a few hours, but it has not caused any impact on the normal access to the server!" Liu Xiao continued to look at the log, and he was also surprised in his heart, the other party was able to organize such a large flow of data flood in such a short period of time, it was simply terrifying, and Hillar They were able to resist for so long, it seems that it is not simple.

Looking down further, Liu Xiao also changed color, "At 4:58 a.m., the other party's flood flow suddenly rose sharply; at 5 o'clock in the morning, it reached a maximum of 1,500 times, and the firewall had to start the emergency plan again to prevent the flood from accessing the server; at 5:01, the data flood suddenly disappeared, the firewall terminated the emergency plan, and the server resumed normal operation again." ”

Liu Xiao tapped the keyboard again, then straightened up and said, "It's over, that's roughly the process!"

After saying that, Liu Xiao turned around and found that several experts were as if they were petrified, and they all stood there without a trace of reaction.

"Everyone, is there a problem?" Liu Xiao had to speak again.

Hillar finally came back to his senses at this time, he took a few steps to the computer, flipped through the log records, and muttered: "Incredible, incredible!", several other experts also came back to their senses, leaned behind Hillar and looked at the log, also with an unbelievable expression, the 1,500 times flood flow, no longer let them rush to surprise, they were surprised that before the 1,500 times flood attack, this firewall was able to work normally.

Liu Xiao was also pinching his chin over there, "Fifteen hundred times, who can control such a large flood flow to a fraction of a second, this person's coordination ability is really terrifying!", who in this world can do this, Liu Xiao thought there.

Everyone was surprised by what they were doing, and for a long time, no one spoke.

"Boom!" The door of the computer room opened again, and everyone came back to their senses, and it was the minister of the Ministry of Defense and Security who entered, followed by several officers.

"Mr. Hillar!" the Minister of Defense and Security looked at Hillar, "This is the only zf publicity website that has not collapsed, and now it is being taken over by the military!"

"Why?" Hillar asked, it wasn't the military's job!

"I have an order from the President!" the Secretary of Defense and Security replied very dryly, and then said, "Your Computer Response Center is tasked with restoring damaged networks and equipment as quickly as possible!" The Secretary of Defense looked at his watch, "In three hours, our network will be connected to the global Internet!"

"This can't be!" Hillar roared, "once we are connected, what awaits us is a huge data flood, and before we find a solution, we will only suffer more losses!"

"It's your business!" the Minister of Defense and Security glared at Hillar, "If you can't do it, go and explain it to the president!", after saying that, he no longer paid attention to Hillar, but slowly paced in front of Liu Xiao, "You are Mr. Liu from China, right? I heard that it was your firewall that spared this website!", his intelligence, after being reprimanded by the president, suddenly became supernatural.

Liu Xiao nodded, but said, "This is not entirely the credit of our firewall, if it were not for the proper handling of Mr. Hillar's computer response center, our firewall would not have survived until now." The reason why their firewall can withstand such a flood of traffic is because their strategy is ahead of the other party's action, and in front of the opponent's last blow, their firewall waited until the traffic reached 1,500 times before successfully issuing the instruction, which shows that the firewall has reached the limit of performance in front of the opponent's huge traffic, and the computing power has dropped significantly。

"I have something I want to ask Mr. Liu!" the Minister of National Defense and Security looked at Liu Xiao, "Are any of the IPs that attacked our network yesterday from Russia?"