CIA, Information Security Department

The beeping alarm sounded, and the bespectacled man came to the computer. A red warning box was flashing.

"Head, firewall alarm, someone is trying to penetrate our network."

The bespectacled man reported while his fingers were tapping rapidly on the keyboard. Following his movements, instructions were generated one after another at a speed visible to the naked eye, and then executed.

"How's it going?"

The supervisor walked up behind the man with glasses and asked.

"It's very crude, the other party used a large-scale cluster attack."

The man with glasses showed excitement in his eyes.

Suddenly, another warning box of "beep beep" appeared.

"Hahaha, it's Π. He actually used a blind trick. He used hundreds of chickens to pretend to be a cluster attack, but secretly used hidden vulnerabilities to infiltrate on the other side."

The man with eyes seemed to have encountered something interesting, and he typed out a series of commands with both hands, trying to intercept it.

"Wait, let him in, and then find a way to trace him back."

The supervisor pondered for a while and then made a decision. This computer hacker codenamed "Π" had fought with them back and forth several times, but he was always slippery. Although he didn't let the other party succeed, he couldn't catch him either.

To the other party's sore feet.

This time he decided to change his mind.

As for why he was able to confirm that the other party was Π, it was because only Π had used this vulnerability so far.

The man with glasses is operating on the keyboard.

Somewhere in Moscow, Natalia looked excitedly at the command line scrolling on the screen, and asked impatiently: "Did it succeed? Did it succeed?"

Goncharova rolled her eyes speechlessly and continued tapping with her fingers. After a while, she said: "Okay, let's go in."

Goncharova didn't notice anything unusual and began to browse through various folders while trying to transfer data.

This time, the CIA disguised itself just right. The loopholes were repaired but not so strong. Goncharova changed her mind slightly and bypassed the opponent's patch.

"The other party is copying our documents. He seems to be deliberately looking for content related to Moscow."

The man with glasses quickly analyzed Goncharova’s purpose through her browsing traces.

Goncharova is indeed looking for information about Moscow. In fact, she is looking for Jack.

Everything that happened in Moscow, the actions of the FSB, and the attitude of the police, it is not difficult to judge that Jack is an espionage agent of a hostile country.

But the intelligence they have does not contain Jack's identity information.

The Goncharova sisters were full of curiosity about this guy who held them hostage without harming them, so they launched this invasion.

Security director: "Inject Trojans into the files he copied."

The man in glasses did as he was told, and the Trojan applet injected the file.

"The other party is disconnected."

The attack and defense are temporarily over, and all that's left is to wait for the moment the other party opens the file.

Somewhere, Goncharova clicked on a folder, hoping to find Jack's identity information, but the files inside were garbled, indicating that the files could not be decrypted.

This is normal for a hacker.

Goncharova rubbed her hands and began to crack.

He found some encryption and decryption tools he developed and started testing them. After several tests, he quickly determined the encryption format of the files.

"Hoho, the composite encryption of two algorithms in the asymmetric encryption algorithm is not a problem for me..."

After figuring out the encryption method, Goncharova began to write a decryption program.

And at the moment when the file was clicked, the reverse tracking program started, and the computer in front of the man with glasses was showing the tracking progress. The coordinate points were precise step by step, first the country, then the city, then the region, the street...

"Found it, the Petchersk Monastery in the center of Kiev..."

The man with glasses excitedly reported an address, but his voice stopped mid-sentence, and he realized that he had been tricked.

How could a hacker intrude into a landmark building in the city center? This is obviously a mockery of the other party.

Somewhere in Moscow, Goncharova closed her computer, but she was careless. If she hadn't built a secure container in advance, she might have been caught.

The other party must have deliberately asked her to copy these files, and then used the Trojan horse inside to track her backwards.

Then the authenticity of these documents is not so credible.

……

FBI, Violent Crimes Bureau

In the observation room, the TV on the wall is broadcasting news urgently.

"This morning, the Coast Starlight sightseeing train from Los Angeles to Seattle exploded shortly after it departed from Santa Barbara Station. The explosion caused a large number of casualties, and the number is still being counted. The FBI has been involved and has not yet announced the incident.

Whether the explosion is a terrorist attack, our station will continue to follow up the report, so stay tuned..."

The screen changed: "A fellow passenger claimed that someone acted strangely before the explosion..."

The screen changed again: "According to insiders, the explosion occurred in the fourth carriage..."

After changing several channels in succession, they were all reporting on the explosion. Silver turned off the TV and looked at the guy opposite the double-sided glass.

At this time, the subordinates pushed open the door and entered.

"Head, the casualties have been calculated. 3 people were seriously injured and 17 people were slightly injured. I basically interrogated everyone in the carriage. No one noticed anything unusual before the explosion..."

“Has the suspect’s identity information been found?”

"Found it, Jack Cliff was born in Texas, winner of the Purple Heart Medal, and served in the Marine Corps' Strong Reconnaissance Company.

He retired two years ago and went to Europe about a year ago. He has been active in Europe since then. He returned to China five days ago and has no illegal record...

In addition, he also has a sister who is a DEA and just moved to Los Angeles with her children not long ago."

The subordinates told Jack’s information.

"What about the period after retirement and before going to Europe?"

Silver immediately caught the unusual aspect.

The subordinate shrugged, "Can't find any information."

"Can't find it?"

"Yes, it cannot be found, and the display permissions are insufficient."

Not enough permissions?

Silver touched his chin. He had retired from the special forces and had a blank record for nearly a year. The guy he captured couldn't be someone from the special department.

Customs information shows that this guy works as a local tour guide in Europe, but are there any local tour guides that the FBI has no authority to investigate?

He is not a rookie, and he knows what this means, and he may receive a call from a senior FBI official soon.

Opposite the glass, Jack sat alone in the interrogation room, with no trace of nervousness in his expression.

Just now, Silver watched the whole interrogation process of Jack by his subordinates, but he didn't ask anything useful.

Silver felt that this guy named Jack Cliff seemed to be shrouded in a layer of mystery.

"Head, Professor Carl is here."

After the subordinates finished reporting, a man who looked like a scholar appeared at the door of the observation room.

Carl Lightman, an expert on micro-expressions, is also a pioneer in the field of micro-expressions.

This research is still in the experimental stage, but the results achieved can already help the FBI, so the FBI funded Professor Carr's research and hired him as an external consultant to assist in case handling.

Silver stepped forward to shake hands with the visitor: "Professor, you must have heard about the bombing at the train station today. We need your help."

"Hope I can help."

……
Chapter completed!