Le Chi, Binh Thanh District (HCMC) found that internet speed is inherently slow. Checking on the network administrator page, she was shocked when she saw that the home’s Wi-Fi had been “logged in” to be stolen.
About a week ago, Ms. Chi found her home Wi-Fi network very slow, even though she had signed up for a 45MB package. Calling the network operator, he was told that the network was slow due to the large access bandwidth, possibly due to multiple devices being used at the same time. “My family is only used by husband and wife and son, and I do not share Wi-Fi passwords with anyone except a few friends who have been visiting for a long time, but they are not near,” said Chi. Said.
Her son then accessed the Wi-Fi network’s administration page and found that four strange devices were sharing the network with him. “I remember accessing a Wi-Fi network with the same name as my family’s network, but the way I entered the password was different than usual, with the password pointing to a website rather than correct on the interface,” Chi said. “Then network access is too slow”.
While sharing this information with friends, some friends in technology believe that Chi’s home stole the Wi-Fi password. You will need to change your Wi-Fi password immediately.
E-commerce sites and groups Facebook Recently, devices “fish” to steal Wi-Fi. The two-board device, which costs from VND 200,000 to VND 300,000, is said to be able to steal neighbors’ Wi-Fi passwords or jam Wi-Fi waves “at a rate of over 90%”.
The device is powered by 5V via a microUSB port. The first board is used to “break” the Wi-Fi waves by jamming the target Wi-Fi network device, making it inaccessible as usual. The second board creates a fake Wi-Fi network with the same name as the target Wi-Fi network, but without the password. The goal is to trick the owner of the home Wi-Fi network into clicking on this network. When clicked, a website asks for “Update Password”. If the victim entered the password here, they have been fooled.
The password is then sent back to the attacker. At this point, the first device will be disconnected to access the network normally. The attacker would use the stolen password to log into that Wi-Fi network. If the victim enters the wrong password, the “attack” process is carried out from the very beginning.
Wi-Fi evasion devices are bought by hundreds of people on e-commerce sites. Its topic is also very much discussed on social networks.
According to Le Dinh Nhan, training director of the Athena Cyber Security Center, Wi-Fi jammers will transmit a different frequency to “break” the target’s Wi-Fi network, making their access unstable. However, this frequency is only suitable for 2.4 GHz Wi-Fi networks due to its far-reaching coverage, which is not nearly as available with 5 GHz networks, which are more powerful, but with smaller coverage.
Mr Nahan rated that if the bad guys only used “K” Wi-Fi, they would slow down home Internet. However, if they have other intentions, they will install malicious code to steal the information of people in that network. “The Wi-Fi network is like a home. Once inside, the crooks can do whatever they want,” Mr. Nahan explained.
According to him, when the network is found to be inaccessible, users should turn off the modem, then turn it back on instead of trying to access the network. Also, do not click on any Wi-Fi network with the same name as the Wi-Fi network in use without a password, and do not enter the Wi-Fi password at all in any website interface. “In case of accidentally providing the password to the bad guy, the user needs to change the password immediately,” Nahan recommended.
Mr Nahan also said that those who intend to buy and use Wi-Fi piracy devices should give up their intentions as the boards in the device can be integrated with malicious code, which can infect the smartphone itself. can do. Go steal Wi-Fi.
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