ភាពច្របល់ឬការត្រៀមរួច? អ្នកជញ្ជាំងនៅលើតុរបស់អ្នក

ខ្ញុំភាគច្រើនទទួលសំណួរអំពីមូលហេតុដែលខ្ញុំមានស្លាកនៅលើឧបករណ៍សូន្យពន្លឺនៅលើកុំព្យូទ័រយួរដៃ និងទូរស័ព្ទរបស់ខ្ញុំ. អ្នកខ្លះគិតថាខ្ញុំមិនដឹងពីភាពខុសគ្នារវាងឧបករណ៍សូន្យពន្លឺនិងកាមេរ៉ាទេ ហើយព្យាយាមពន្យល់ឱ្យខ្ញុំស្គាល់ថា នេះមិនមែនជាកាមេរ៉ាទេ. អ្វីដែលពួកគេចង់មិនដឹងគឺឧបករណ៍ស្គាល់ពន្លឺជិតៗ អាចត្រូវបានប្រើជាមួយវិធីណាមួយនៃការរៀនម៉ាស៊ីន ដើម្បីដកយកទិន្នន័យ ដូចជាពួកវាជាម៉ាស៊ីនថតខ្សោយ.

ខ្ញុំភាគច្រើនស្តាប់ពីមនុស្ស: “ប៉ុន្តែយើងគ្មានអ្វីត្រូវលាក់!” ល្អមែន, អ្នកមានអ្វីត្រូវលាក់ច្រើនជាងដែលអ្នកគិត, និងទិន្នន័យរបស់អ្នកអាចត្រូវបានផ្គូផ្គងជាមួយទិន្នន័យផ្សេងទៀតដែលបានប្រមូលពីអ្នកកន្លែងផ្សេង ដើម្បីបង្កើតចំណេះដឹងក្នុងកម្រិតដែលអ្នកមិនអាចស្រមៃដល់បានទេ. និងអ្នកដែលប្រមូលទិន្នន័យមិនចាំបាច់ជាអ្នកមានចំណង់ចំណូលចិត្តត្រឹមត្រូវ. ទិន្នន័យរបស់អ្នកអាចត្រូវបានប្រមូលដោយអ្នកស្មើគម្រប់គំហានផ្សេងៗ ដើម្បីវិភាគប្រើ AI និងត្រូវបានប្រើសម្រាប់គោលបំណង និងចំណង់ចំណូលចិត្តផ្សេងៗ.

ក្នុងសុវត្ថិភាពអ៊ិនធឺណិត, យើងសន្មត់ថាបើប្រភេទការវាយប្រហារមានសក្តានុពល និងមានឱកាសក្នុងការធ្វើការវាយប្រហារ, នៅពេលនោះអាចមានមូលហេតុក្នុងការធ្វើការវាយប្រហារទាំងនោះ. We do not assume that those who can collect the data always have legitimate cause to collect that data. We also do not assume only a single party or entity exploit a vulnerability to collects that data.

Below is a list of other things that can be used to spy on you that you probably don’t know have such capabilities.

Your TV speaker can listen to you

I am one of those who usually choose a TV model without a microphone or camera before I need to physically remove those devices. I also have a home firewall and a secured internal network, but I have learned throughout the years not to only rely on logical controls. However, based on a WikiLeaks release in 2017 and documents from 2014, the CIA (in cooperation with MI5) turned speakers in certain TV models into microphones to collect data. They even developed a fake off mode to show that the TV is off when they collect those conversations. If you think your TV might listen to your conversation, it is better to unplug it when not in use. It also saves you some energy because plugged devices even while not in use may consume some electricity.

Your tablet or laptop light sensor can capture your hand or your image

I always adjust screen light manually, and I believe I have a good reason for that.

The ambient light sensor is used to measure the amount of light and to adjust the brightness of the screen. Ambient light sensors can be used to capture images or keystrokes to steal passwords and data. A group of MIT researchers recently created a proof of concept by using an Android tablet’s hand gestures captured by the ambient light sensor to capture touch interactions.

Your mouse may listen to your conversation

This one is outrageous! A mouse doesn’t have a microphone or even a speaker to be turned into a microphone to listen to anything. However, there is a side channel attack known as “Mic-E-Mouse” that enables an attacker to listen to your conversations through your mouse.

A high performance gaming mouse (high DPI) can be hijacked by its optical sensor, so when you talk, voice vibrations can be measured with these sensors. Using machine learning algorithms and data from mouse sensors, security researchers can identify intelligible speech from vibrations.

Side channel attacks are a type of physical attack that measures changes in device output while a device performs an action. This type of attack is usually more sophisticated and targets certain assets like encryption keys. However, if an attack method is developed for certain types of devices, it won’t be very difficult to expand it to other similar devices and even automate it.

Motion sensors (gyroscope) can be used to record your voice

Now that we learned your mouse can be used to record your talking, it’s good to know that motion sensors can also be used for the same purpose. This is important as almost all modern smart devices like phones and tablets have a gyroscope or motion sensor. The sensor acts as a vibrating device, ធ្វើឱ្យវាល្អឥតខ្ចោះសម្រាប់ការវាយប្រហារឆានែលចំហៀង និងដើម្បីចាប់យកសំឡេង, ដោយសាររលកសំឡេងអាចបង្កើតរំញ័រតូចៗ.

ថាសរឹងរបស់អ្នក (HDD) សំលេងរំខានអាចត្រូវបានចាប់យកដើម្បីលួចទិន្នន័យរសើប

ឥឡូវនេះយើងបានរៀនអំពីការវាយប្រហារឆានែលចំហៀង, មានប្រភេទនៃការវាយប្រហារហៅថា DiskFiltration បង្កើតឡើងដោយក្រុមអ្នកស្រាវជ្រាវអ៊ីស្រាអែលដែលអាចចាប់យកទិន្នន័យរសើបពីសំឡេងនៃថាសរឹងដែលកំពុងដំណើរការ. ការវាយប្រហារប្រភេទនេះមានភាពទំនើប និងមានគោលបំណងទៅលើឧបករណ៍ដែលមានគម្លាតខ្យល់. ជាមួយនឹងឧបករណ៍ដែលមានគម្លាតខ្យល់, ឧបករណ៍មិនត្រូវបានភ្ជាប់ទៅបណ្តាញណាមួយដូចជាអ៊ីនធឺណិត ហើយជាធម្មតាត្រូវបានរក្សាទុកនៅកន្លែងរសើប. ឧបករណ៍ដែលមានគម្លាតខ្យល់មិនចាំបាច់មានភាពស៊ាំទៅនឹងការវាយប្រហារតាមអ៊ីនធឺណិត. ឧទាហរណ៍បុរាណនៃការវាយប្រហារទាំងនេះគឺ Stuxnet ដែលកំណត់គោលដៅលើប្រព័ន្ធនុយក្លេអ៊ែរអ៊ីរ៉ង់ដែលសុទ្ធតែមានគម្លាតខ្យល់.

In this type of attack, an attacker infects the device with malware that changes how the device operates. The malware can be introduced to the system by an intruder or through other methods. The device is air gapped, so the malware can’t send anything outside. However, it makes the device operate in a certain way so that the drive arm moves in certain patterns. A nearby smartphone or device that is not air gapped can be used to capture the sound of the hard disk drive to decode it back to data while it is written or read on disk effectively removing the air gap.

Your computer fan can compromise your data

You have an SSD on your system and don’t use a cheap and noisy HDD. So if your device is air gapped, then sensitive data cannot be exfiltrated. ល្អមែន! Another group of Israeli researchers invented a method for you. Although your SSD doesn’t have an arm to rotate to make noise like with an HDD, your computer fan can be used to capture sound to compromise sensitive data from your air gapped computer. In this type of attack, malware first infects the air gapped system (perhaps by an intruder to a secured facility), then the speed of the cooling fan will be changed in certain patterns. The sound can transmit the data to a nearby listening device.

WiFi signals can see through your walls

WiFi signals bounce off humans in a room. Researchers can see through walls to know how many people are in the room and identify individuals by movement and posture without needing any camera.