Main ways of mobile phone leakage

Why are there passive leaks in the three ways of leaking secrets? Compared with ordinary mobile phones, smart phones have an independent operating system and running space, users can install and uninstall application software by themselves, and realize wireless network access through mobile communication networks. It is this convenient service different from ordinary mobile phones that has become a channel for smart phones to leak secrets. First, third parties can intercept calls and send and receive messages from smartphones through special devices. Smartphones use an open electronic communication system or Internet connection. Usually, as long as they have corresponding radio reception facilities or network equipment, they can intercept the information content of users' calls and surfing the Internet. In addition, the GPS function of the mobile phone enables it to "report its home and address". At present, intelligence departments or security agencies in many countries are authorized to monitor smartphone calls and intercept information in this way to search, track and locate specific users. However, this method is professional and requires a lot of resources, so it is difficult for ordinary institutions or individuals to implement it. Second, using mobile phone viruses and Trojans to secretly destroy or steal the information of smart phone users. Smartphone users often receive advertisements and emails of unknown origin, and sometimes search for some application software or various QR codes. Viruses and Trojans are hidden behind some illegal emails and QR codes. Once the user sees the "code" and clicks Install or Brush, it will activate the virus and install a Trojan horse on the mobile phone, which will lead to cell phone poisoning and information destruction. In addition, some Trojans will lurk in the mobile phone to wait for an opportunity to start, and monitor the user's call in an unconscious way. Reading the call content, online transactions, investment and other data in the mobile phone, and starting the real-time uploading program to upload these information to the server built by criminals will lead to the disclosure of sensitive information of users and even cause irreparable economic losses. Third, some organizations preset software or remotely implant software in smartphones to steal user information in real time. Or manually install eavesdropping software or hacking software in the mobile phone after stealing the user's smart phone; You can also add these softwares to some application softwares, and install them together on the mobile phone when users install the softwares without any hints. There is also a more professional and hidden way to remotely implant software in smart phones through the Internet or baseband. Through these methods, we can completely control the smart phone, lock the user when necessary, conduct background control to monitor the user's call in real time, or upload the call content to the pre-bound mailbox through the network for others to retrieve at any time. In addition, the smart phone with this eavesdropping software can also be remotely started and operated, for example, by receiving instructions to activate the microphone of the mobile phone, thus becoming a bug to eavesdrop on the user's conversation. This process can be carried out whether the mobile phone is in standby or power-on state, and it will not be noticed by the user at all. Finally, through the unencrypted malicious Wi-Fi connection, the information in the user's smartphone is ambushed. Nowadays, more and more public places provide free wireless Internet access services, and many users are used to connecting unencrypted Wi-Fi networks with their mobile phones, without thinking, surfing the Internet or sending and receiving information. If the mobile phone automatically searches for and connects to the Wi-Fi maliciously set by the hacker, some important data of the smart phone will be intercepted by the hacker computer that controls the Wi-Fi device, and the unencrypted user name, account password and other private information in the mobile phone will be leaked unconsciously. Measures to deal with leakage: Most of the leakage of smart phones is carried out through background operations, so this kind of security risk is usually difficult to avoid, and users can only minimize this situation. First of all, in order to resist and monitor viruses and Trojans, users should install some professional firewalls and antivirus software downloaded from regular websites for smart phones, regularly kill viruses and upgrade their own software, and install security software with privacy protection function when necessary; In order to avoid the invasion of viruses and Trojans, don't open advertisements and short messages with suspicious identities at will, don't brush the QR code that appears on the Internet, and don't easily download and install the application software found on the Internet, especially the software provided by some irregular websites or forums; Secondly, in order to reduce the possibility of being implanted with eavesdropping software or hacking software, don't give your smartphone to others for safekeeping and easy use. After the mobile phone is recycled or repaired, necessary professional testing should be carried out. When you are not online for a long time, you should turn off the wireless connection function and Bluetooth and USB interfaces of your mobile phone. Thirdly, in order to avoid being "blindsided" by malicious Wi-Fi, don't easily connect to free password-free Wi-Fi. When it is necessary to use it, you should clearly see the hotspot name of Wi-Fi, select and automatically jump to the browser security verification and mobile phone verification code security authentication process; In addition, shut down some services in smart phones that may reveal users' private information, such as "frequent places" that can display users' frequent geographical locations through maps and "people nearby" in WeChat that can locate users' locations; Encrypt and save private data, don't send private information easily or send it in an encrypted way, always pay attention to the operation of the mobile phone and deal with abnormal situations in time.