Source: Xinhuanet
Xinhua News Agency, Beijing, April 14th Question: Second-hand mobile phone transactions have hidden personal information security risks. How should our old mobile phones be handled?
Xinhua News Agency reporter Gaokong
Recently, it was reported on the Internet that there may be a risk of personal information leakage in second-hand mobile phone transactions, which has attracted widespread attention from the society. What are the risks of second-hand mobile phone trading? Can the deleted personal information in old phones be restored? How should our old mobile phones be handled correctly?
Personal information leakage of second-hand mobile phones has caused concerns
After simple operations, a mobile phone that has deleted data and has used the "factory reset" function that comes with the phone, can restore its original data. And there are also merchants who specialize in this kind of "business".
Recently, news circulating online that second-hand mobile phones can recover their original data through technical means, which has caused new anxiety about the public's information leakage due to the recycling of second-hand mobile phones.
So, after restoring the phone factory settings and deleting relevant content and software, is it reliable to sell your old phone?
"The principles and rules of information storage for traditional computers and today's smartphones are basically the same. Simple factory reset and deletion of files do not mean that the information has been completely deleted." Pei Zhiyong, a network security expert and director of the Qi'anxin Industry Security Research Center, said that the system actually deletes the indicated path of the file on the mobile phone, which means that ordinary people cannot find the file. However, the actual content information is still stored inside the mobile phone.
"So, it is possible to restore the content information stored in the mobile phone before it is stored, and the technical threshold is not high." Pei Zhiyong admitted that at present, in some irregular second-hand mobile phone recycling stores, some people will restore the stored information in the mobile phone in this way, such as mobile phone address books, text messages and other content involving personal information, and then sell it for a second time to make huge profits.
Industry experts believe that at present, second-hand mobile phones have become one of the sources of personal information leakage, forming a mature gray industrial chain, and the personal information obtained from it may be used for spam calls, text messages and even telecommunications fraud.
How to deal with old mobile phones has become the " mobile phone family " new trouble
"Mobile phone replacement is getting more and more frequent. I already have 7 or 8 old mobile phones at home. I don't know what to do after a few years, so I can only keep it." Xiao Wang, a citizen of Beijing, said that in addition to mobile phones, she also has several old laptops and desktop computers to put them at home, which takes up a lot of space.
Data released by the Ministry of Industry and Information Technology shows that from January to February 2021, my country's mobile phone production reached 210 million units, a year-on-year increase of 49.2%, of which the production of smartphones reached 140 million units, a year-on-year increase of 48.8%.
"my country is a major smartphone user country, and the number of mobile phones produced and eliminated each year is huge." Telecom expert Fu Liang predicts that the scale of second-hand mobile phones will continue to increase.
With the rapid development of smartphones and the Internet, similar situations to Xiao Wang will become more and more common. Some consumers even have dozens of old mobile phones at home. Most people don’t know how to recycle and properly handle them. They can only put old mobile phones and old smart products at home to "eat dust".
"It's a pity not to sell, but I'll worry if I sell it." "It not only takes up space at home, but also cannot make use of the residual value of the mobile phone." "A half-old mobile phone can also be sold at a good price, but I'm also worried that personal information will be leaked." The messages left by netizens on the Internet represent the voice of many consumers.
As the number of old mobile phones continues to grow, consumers on the streets and shopping malls can see slogans such as "high-price recycling of mobile phones" and recycling stores from time to time. However, most consumers are not familiar with the mobile phone recycling and second-hand mobile phone sales industries. When recycling old mobile phones that have been used in close use, the public generally has concerns whether it will lead to potential risks such as leakage of important personal information and privacy.
The correct way to open old phones comes
"Generally, when changing your phone, people generally pay attention to reducing the use and storage of key information on old phones, and the value of information on old phones begins to decay over time."Fu Liang said that even if some APP applications, payment-related identities and other information are recovered by others, the chance of directly causing harm to mobile payment is relatively low. According to Fu Liang, the version upgrade and iteration speed of smart application software such as financial institutions' APPs and mobile payments is relatively fast. It is difficult to apply user-related information recovered in second-hand mobile phones to the new version of payment functions. But for example, if privacy photos, especially important ID cards and other important documents, photos and data are recovered, the hidden danger will be greater.
is the general trend of recycling and reuse of outdated electronic products. So the question is, how can we protect the letter Sell and recycle your old mobile phones under the premise of interest security?
Pei Zhiyong suggested that, first, try to sell old mobile phones to large platforms and large stores as much as possible, and try to avoid personal channels or small stores. Secondly, after replacing old mobile phones, do not rush to sell. In addition to restoring factory settings and deleting old files before sale, you can choose to download "File Smash" software, repeatedly overwrite the eliminated mobile phones and computers, and copy to .
"Users can connect the mobile phone to the computer, first delete all the contents of the mobile phone, and then write new large files into the mobile phone, repeat them several times, and try to fill up their space. "Pei Zhiyong said that this can basically ensure that the personal information and traces in old mobile phones are completely removed.
experts recommend that sensitive and secret information be kept as much as possible on the mobile phone. Important information should be deleted as soon as possible after being saved and used. After multiple data coverage, the chance of data recovery will be greatly reduced.
Fu Liang believes that from the perspectives of world environmental protection and resource reuse, the development of the second-hand electronic product recycling industry represented by smartphones, computers, etc. is imperative. Relevant departments should study measures and regulations in advance to provide assistance to the relevant recycling industries, so that recycling channels are more transparent and recycling methods are more scientific and accurate, so as to promote the healthy and orderly development of the industry.
"Clear the standards for recyclers' professional qualification certification and introduce more detailed regulations and measures, so that we consumers can say 'no' to unidentified recyclers. "Pei Zhiyong said that when legislation and regulations are formulated, second-hand mobile phone personal information leakage should be included in the overall scope of information protection, and unified planning and deployment measures should be contributed to improving the security protection of personal information.
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