We have heard a lot about the Internet of Things, and more and more Internet of Things are connected to the Internet. However, in addition to the fact that these devices have been connected to the Internet, they are also increasingly using different radio frequencies for connection or control. These radio frequencies usually use proprietary or insecure protocols, so it is usually impossible to intercept the signal to destroy the signal, but just block it.
A recent case in Manchester shows that our RF addiction can be very vulnerable. In this example, the thief used a simple car lock jammer to break into the car, causing confusion in the parking lot, no one could unlock/lock their car lock and eventually triggered multiple alarms.
The operating frequency of car locks in North America is 315 MHz, and in Europe and Asia it is 433 MHz. Although gps blocker are illegal in most countries/regions, in many places, the price of selling these devices on these frequencies is approximately US$50 to US$200, depending on the range and manufacturing quality of the device.
I have heard many people who “cut the wires” and they say they are no longer connected to the cables. What’s more disturbing is that they brag to the public online through social media. It puts people in danger, and many people ignore it. Potential thieves or home intruders are now hit hard. If they are even smart, they can use it when they invade your house. Like car lock jammers, cell phone jammers are illegal but still easy to find.
Cell phone jammer batteries can be sold to residents of the United States and other countries/regions by shipping, even if they are from illegal online sites. The use of cell phone jammers can result in fines of less than $20,000. However, although criminals can buy guns without a license, it is not difficult to hold a phone jammer.
If a thief or an intruder activates any of these devices from outside your home, your phone will no longer be able to receive signals, and you will no longer be able to make emergency calls for help. Many of these jammers can also disrupt Wi-Fi, so you can easily turn off all communications within your home by simply tapping the switch on these devices.
Although more and more people are “cutting off the power cord”, this has also caused problems for traditional alarm systems that rely on land lines. If the ground wire is cut, an alarm is usually triggered at the alarm monitoring station. Today, alerts can be wired via an Internet connection or using a cellular connection. However, these two new methods have problems. If the Internet or cellular connection is disconnected, the alert provider is usually not notified. Thieves can easily disconnect from the Internet at home, and we have seen what can be done using mobile phone jammers.
Many operators also sell other home automation and security equipment and services, from alarm systems to cameras and locks. However, when the mixer is introduced into the mixture, especially when criminals are familiar with the technology, the question arises whether these equipment and safety measures are working properly. These jammers can also disrupt industrial systems and block battery reception with a small amount of power grid. It is conceivable that such tactics can be used not only by criminals, but also as a means of attack.