First, old mobile phones, when changing new mobile phones, many people will resell old mobile phones. Although you restore the old mobile phone to the "factory default settings" or even format, through technical means, professionals can still restore all the SMS, address book, software and even browsing records in the old mobile phone, and even the payment account and credit card information may be restored. Bian Xiao suggested that when you change your mobile phone, you should try to "like the new and hate the old". If it is really necessary to sell, we should also do a good job of clearing the warehouse in advance.

Second, various documents, such as express orders, tickets, boarding passes, shopping receipts, business documents of mobile phone cards, utilities, etc ... These documents may lead to the disclosure of personal information. Bian Xiao warned that your documents must be shredded or deleted when they are not needed, and be handled carefully.

Third, public WiFi, if the WiFi automatic connection function is selected in the network settings of smart phones, public WiFi will be automatically connected. The security protection function of WiFi is relatively weak, and hackers can steal any user name and password on WiFi through some simple devices. Tip: surfing the internet is dangerous. You should be careful when accessing the internet. Try to set the phone to not connect automatically.

These information leaks are only passive, and can be avoided as long as prevention is strengthened. But some information is often unconsciously "actively" contributed by people in their daily lives. For example, in the communication on social platforms, personal information is often exposed online, which everyone can see. For another example, when looking for a job, people often look for a job online, and personal information is easily found by others. Bian Xiao reminded that no matter what the occasion, we must pay attention to hiding our information, safety first.

Another situation that is most easily overlooked is the APP in the mobile phone. Nowadays, people often don't pay attention when installing mobile apps. These applications require many permissions, such as access to contacts, call records, text messages, etc. These are not necessarily the permissions that the APP must use. The network security engineer reminded that these permissions can be disabled through mobile phone settings or security software to achieve the purpose of prevention.

Will anyone think that it is safe to transmit their data to APP operators? Is it alarmist? In fact, some information is not necessarily intentionally leaked by some departments and units that collect and apply people's personal information. According to the network security engineer, the report in the White Paper on Information Security of Mobile Internet Finance APP shows that there are a lot of information security problems in domestic mobile Internet finance APP. At present, most domestic apps that provide mobile financial services to customers lack standardized standards and processes for security supervision, and many apps lack adequate security tests on their codes and business logic, so customers' information is likely to be at risk. The most straightforward example is the "new match point" user sensitive information disclosure incident reported by Wuyun platform last year. Through the leaked internal management system of the new match point, the user's name, ID number, telephone number, bank card information and so on can be seen without password and account number. The risk rating is: high, and the official has been informed. But according to the network security engineer, this vulnerability has not been fixed since last year. So I want to remind everyone that we must carefully install the APP and carefully control the permissions of the APP to prevent problems before they happen.

In addition, the network security engineer also revealed that every software or program has certain bugs, that is, loopholes, which is a process of continuous improvement, and these loopholes provide opportunities for some lawless elements. So if you want to protect your private information, you must be careful with your mobile phone. After all, mobile phones have penetrated into every detail of your life now.

Finally, I want to tell you that the state has issued relevant regulations to protect personal information, but it is far from enough to rely solely on departmental supervision. If you want to protect your privacy, you must start from the side, and the details determine success or failure. At the same time, we also call on everyone to actively report when they find someone selling personal information and work together to build a harmonious, stable and beautiful society.