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"It's snowing."

Tang Chao landed on the roof of a building again, looked at the sky completely covered by dark clouds, and the sporadic snowflakes that had begun to fall. He felt great.

The weather forecast said there would be heavy snow today, accompanied by strong winds, making it perfect for causing trouble.

Although there was a possibility of leaving footprints, the heavy snow and strong wind would smooth everything out and cover it up.

By the time they came knocking, he would already be back in his own country.

He wasn't a long-term undercover agent here; he was just a passing sci-fi assassin.

He flew over more than a dozen rooftops in a row, even crossing some two-lane roads that weren't very wide, until he encountered a four-lane road and stopped.

It wasn't that he couldn't jump over a distance of more than ten meters, but jumping such a distance would involve too much movement, increasing the chance of being discovered, so he gave up.

However, he observed the surroundings and, to prevent anyone from spotting the assassin descending from the building's exterior wall, he returned to a building.

Behind that building was a small alley, dark and deserted at night, making it perfect for him to go downstairs.

This area also featured traditional Russian architecture, with various patterns, horizontal stripes, and relief decorations, making it easy to climb.

By the time he came down and walked into a place where the light could reach, the light snowflakes had turned into goose feather snow, and a cold wind had picked up.

Looking at the pedestrians on the street, each was wrapped tightly in a down jacket, with scarves and hats, completely covered up. It was good if you could see their eyes, let alone their faces.

Since everyone was doing that, Tang Chao naturally followed suit.

His coat had a hood, so he put it on, turned up the collar, and "fully armed" himself.

The first target wasn't too far away, just a few hundred meters in a straight line. The crow tracking the target had already landed and released an insect monitor that had followed the person into their room, while the crow had found a roof overhang to hide under and was continuously observing the entrance.

After all, strong winds and heavy snow had a significant impact on equipment.

The other crows were also tracking targets, more than half of them had already returned to their residence, and only three people were still wandering outside, which was too unfriendly for crow reconnaissance aircraft. Tang Chao felt uncomfortable looking at those three monitoring screens.

Too shaky.

Tang Chao had already given the order that if the wind and snow continued to increase, to the point of threatening the safety of the bionic crow's body, and the target had not yet returned to their residence, the mission would be aborted.

At that time, the tracking and reconnaissance mission would be converted into a safety and shelter mission. The crows would need to find a relatively safe place nearby and enter energy-saving hibernation mode, waiting for external conditions to be suitable for flight again before returning.

Because the wind and snow had increased, there were even fewer pedestrians on the road.

Every pedestrian wrapped themselves tightly and hurried along. The passing sci-fi assassin, Tang Chao, was also a "passerby", so he was also in a hurry.

Soon, he arrived at the first target's building, which was an apartment building.

The buildings in this area were relatively old, they should have been around for some time, and the architectural style had an old Russian feel. According to the footage observed by the crow outside and the insect inside, the management wasn't very good either.

If someone had sufficient funds and a certain pursuit of quality of life, they would basically not choose this place, but this situation not only met the requirements of some people with a restrained lifestyle, but also met the needs of certain people.

People with ulterior motives.

Anyway, it was already a bit dilapidated and dirty, so they didn't care who moved in. They didn't even have cameras here, and they didn't care who came in and out, as long as they paid the rent.

Tang Chao also found a lot of Russian prompts.

【Take care of your belongings, we only provide the house, not security!】

【If there is a power outage, first check if you forgot to pay the electricity bill, tripped the breaker, or the room's wiring is aging. Don't call me right away!】

【Take care of your fire source. If you cause a fire, you will be responsible for the fire fighting costs!】

【You can change the color of the wall, but it's best not to change its shape, otherwise you will face a huge fine!】

That's roughly the meaning. Besides shirking responsibility, the rest is to ask tenants to protect the house.

After all, this kind of old apartment relies on cheap rent for profit. If the house is damaged by the tenant, then the repair fee will definitely cost a lot of money.

As the owner of a cheap apartment, he doesn't want to pay this money.

On the mission side, because the insect followed in, the crow circled the building a few times while landing to stare at the entrance, and found that the agent's residence was on the fifth floor, with one large and one small window.

This height was neither high nor low, and with the various illegal structures on the window sill, it would be very easy to get up there with some thought.

So even if there were illegal structures on the window sill, there wasn't a single protective net.

Not to mention the windows of other houses, they were very messy anyway. The agent's window had a bit of "design."

It wasn't that his window wasn't messy, but the mess was organized. Other people's mess was really messy. For climbing and parkour enthusiasts, it wasn't difficult to climb up or down, but the agent's window was different.

Although his window also looked messy, with some messy things piled on it, and protective nets installed, and even some spikes, rusty iron wires, and broken shelves sticking out from the inside, the first impression was that it was used to prevent window-climbing thieves.

However, in Tang Chao's view, preventing thieves was secondary, and preventing some emergency situations was the real purpose. Even at a critical moment, the other party could use those messy things to create some small dangers, allowing himself to run faster from the window.

After observing the outside, and observing the agent through the insect's perspective, seeing the other party eating fast food while using the computer to communicate with some people, he decided to go up.

If he didn't go up, the little bug would run out of power.

There was no way around it, the size limited the little bug's detector's battery. This thing couldn't be used outside at all, and could only be used with larger detectors in a carrier-borne aircraft mode.

Like their combination with crows.

Crows are definitely inconspicuous outdoors, but they are definitely very conspicuous when they enter indoors.

Of course, whether they can enter indoors is another matter.

So it must be paired with smaller detectors.

The little bug detector doesn't work well outside, but it is definitely top-notch when placed indoors.

There is generally no complex airflow movement indoors, which is very beneficial for the little bug detector's movement. As long as you avoid the air supply track of the electric fan and air conditioner, you can fly or climb anywhere else.

And isn't the power limited? If you can find a good angle, it's better to just monitor statically, which is definitely more power-saving than monitoring in motion.

The little bug currently monitoring indoors is in this mode.

But even so, its power is running low. If Tang Chao hadn't arrived, the crow would have planned to move around, fly to a place with a gap, and release another little bug detector to take over.

The current amount of electricity is enough for Tang Chao to find the spy's residence, and then provide Tang Chao with the spy's reaction when he sneaks in and picks the lock.

"Whoosh ~"

Just as Tang Chao was about to enter the door, someone came over and also wanted to enter the door, so Tang Chao didn't even pull the door, but directly followed in after the other party opened it.

The other party was wrapped tightly, and covered in snow, similar to Tang Chao's situation, so he did what Tang Chao did after entering.

It can make him appear to be very familiar with this place.

As a result, the other party didn't do anything and ran upstairs "thump, thump, thump" without even wiping off the snowflakes on their body.

「Awesome!」

Tang Chao quickly followed.

The person turned on the second floor, and Tang Chao ran to the fourth floor according to that person's model, and then began to go upstairs quietly.

With the assistance of the nano combat suit, his special structure sole can absorb the volume well, allowing him to walk like a feline predator.

As he went upstairs quietly, the little bug continued to provide him with pictures. The spy stopped eating after eating half of it, and put it aside, concentrating on using the computer.

Good opportunity!

Tang Chao came to his door lightly and found that it was a simple mechanical anti-theft door.

That's right, after all, this is not a high-end apartment. There are no cameras in the corridor. If there are no cameras, electronic smart doors will definitely not be used.

And how should I put it, in the network era and the intelligent era, smart door locks are really not necessarily as safe as mechanical door locks.

The essence of a smart lock is a mechanical lock, but it is equipped with a motor to support the electric unlocking method, and then integrated with modern unlocking methods such as fingerprint recognition, password, door card, Bluetooth, and mobile phone App to become a smart lock.

If the previous mechanical lock only needed to defend against one aspect, smart locks have more places to defend, in addition to the original mechanical lock module, but also to defend against circuit, system, and authentication recognition aspects.

The most ⊥new⊥novel⊥is⊥first⊥published⊥on⊥six⊥9⊥book⊥bar⊥⊥!

For example, some smart door locks that claim to have facial recognition can be opened with a photo, which is faster than the person using facial recognition in person.

And the most news reports about smart door locks being cracked use the keyword "small black box", which is the simplest and most brutal way to crack smart door locks.

This small black box is actually a miniature high-intensity electromagnetic pulse generator, which can form a strong magnetic field and destroy surrounding electronic equipment.

When a smart door lock encounters such a strong voltage and current, the chip on the circuit board will freeze, and most smart locks on the market will restart by default when the chip freezes, and automatically unlock after restarting.

So those inferior smart door locks have no power to fight back in front of this small black box.

Fortunately, many mainstream door lock companies now pay attention to this issue. 85% of door locks can prevent small black boxes during testing, and they basically improve the circuit design and add a voltage stabilization module to prevent high-voltage shocks.

So everyone should choose formal channels and big brands when buying smart door locks.

Cough, of course, this is what the smart door lock manufacturers of big brands say themselves.

They will directly use small black boxes for safety testing at various anti-theft door exhibitions.

How to test it? It is to put some inferior door locks and high-end "friendly business" door locks, as well as their own more high-end smart door locks to be launched, together for testing.

The result of the test is of course that inferior and high-end "friendly business" are garbage, and they can be opened with one touch. Only their own smart door locks are the best.

In fact, this thing is to adjust the power of the small black box, so that the power of the small black box just reaches the standard for opening other locks, and then is a little worse than the safe power of its own door lock, so that it can test out perfect results.

In fact, what is sold when selling smart door locks is "community safety."

After all, the communities where users who generally buy high-end smart door locks live are not bad. The access control at the entrance of the community, the security guards patrolling the community non-stop, and the cameras that can be seen everywhere, and some users will even install cameras at their own doorsteps, which greatly improves safety.

So this kind of door is not to say how much the safety has been improved, but that there are fewer thieves.

Even if they come, they will silently walk away when they see a camera installed at your door.

And the price of a camera and the price of a set of smart door locks, tsk ~

In addition, there are also fingerprint locks. Generally, low-end fingerprint recognition uses LED light to enter the finger, scatters inside the finger, and emits from the fingerprint for PD detection, combined with capacitive fingerprint image acquisition.

Simply put, it uses light to illuminate your finger, and the machine sees the fingerprint and compares it with the fingerprint in the memory to pass it.

This kind of door lock only needs a little wax and glue to replicate a fingerprint to pass these low-end fingerprint recognition door locks.

Wax costs 1 yuan, glue costs 80 cents, and a bottle of glue can make 200 fingerprint films, each costing less than 1 cent.

Better smart lock manufacturers will add a living body sensor to fingerprint recognition, which can judge the temperature, capacitance value, etc. of the finger to prevent the impersonation of fingerprint molds.

The handle will also adopt a fingerprint-proof matte design to reduce the possibility of thieves collecting fingerprints.

But this can only be said to be relatively safe. The safest thing is to live in a safe community. After all, agents in movies often do this kind of thing.

There are also those that use remote APP unlocking, which is even more insecure for the network age.

The previous ones still required thieves to commit crimes on the spot, but this kind of full-process unlocking may be solved by thieves drinking ice at home.

Then find a partner and remotely control the partner to go in and steal things, that's just great.

Even if it is hacked, not only can it remotely control the door lock status and obtain user mobile phone information, but it can even reverse enter the manufacturer's server and obtain a large amount of mobile phone information of users who use the brand's smart door locks.

That's even more fun.

This spy is of course very concerned about his own safety, so he uses the highest level mechanical lock, and even has his own small modification. During the rental period, even the landlord cannot enter.

But such a door lock is not difficult for Tang Chao at all.

He stretched out the index finger wearing black gloves and approached the door lock. When it touched the door lock, the tip of the glove's index finger liquefied and flowed directly into the lock eye. In the blink of an eye, a matching black key was formed.

Tang Chao turned it gently, and the door lock made a slight noise.

The little bug had observed the whole process of the spy opening the door before. The door lock of this door was very quiet, and even the door shaft was very lubricated, and there was no sound when pushed open.

So the situation in the movie where you carefully push open the door, but it makes a huge friction sound and alarms the enemy, will not exist at all.

And according to the images sent by the little bug at the same time, the other party really didn't seem to have any resis...

Wait, holy crap, the spy found him!

The spy, who was just rapidly typing and chatting on the computer, froze for a moment, and it was clearly not triggered by the conversation.

Then he threw away the computer, did a roll, and then suddenly darted forward, followed by another roll, directly into the bedroom.

The whole set of movements was as smooth as flowing clouds and flowing water, like a whirlwind sweeping away remnants, smooth and extremely fast.

"Bang, bang," two sounds.

One sound was the other party slamming the bedroom door shut.

The second sound was Tang Chao, seeing that things were not going well, flashed into the living room and slammed the door shut.

Then his coat, pants, and shoes instantly shrank, turning into a nano combat suit!

Time to do what an assassin is good at!

What is an assassin good at? That certainly goes without saying. Anyone who has played Assassin's Creed knows.

Naturally, it's perfect infiltration.

If no one discovers you, the infiltration is definitely perfect.

In addition, making the person who discovers you cease to exist is also a kind of perfect infiltration.

Tang Chao's current situation is that he has been discovered, but that's okay, he still has the opportunity for "perfect infiltration."

Moreover, he is very curious about how the other party discovered him.