IT Home October 3rd news, the WeChat Security Center has now announced the top ten rumors in the circle of friends in September, includes such as "Restore factory settings when selling old phones to ensure that data is not leaked".
Among them, in response to the rumor that "restore the factory settings when selling old phones can ensure that data is not leaked", the scientific rumor refutation official said that this is equivalent to "marking" the storage space in the area where the deleted data is located to be overwritten. actually has the original data there. Unless another data is stored (write) in this part of the area, the original data will be overwritten.
mobile phone factory resetting is just to simply restore the system files and delete the user data. The content on the internal storage chip of the mobile phone is not completely deleted. This is actually equivalent to "marking" the storage space in the area where the deleted data is located to be overwritten. In fact, the original data is still there, unless another data is stored (writed) in this part of the area, then the original data will be overwritten.
Therefore, to ensure the security of information when the old phone is sold, after the phone is restored to factory settings and restarted, it is necessary to fill up the original phone storage memory by copying videos multiple times, downloading software, etc., overwrite the original data, and then restore the factory settings.
or below are the top ten rumors on WeChat Moments in September. How many readers of IT Home have seen it, and how many times have they seen it?
Qianjin Teng Drinking in water can prevent the new coronavirus
Drinking wine is good for blood vessels
Tsinghua University Training training class
Eating chicken head will Heavy metal poisoning
Toothpaste will cause "drug resistance". You should change it frequently.
When selling old phones, you can restore the factory settings to ensure that the data is not leaked.
High temperature heat stroke can be taken Huoxiang Zhengqi Water Relieve
Scan one code twice to prevent it from becoming a close contact
O Blood type is "universal blood". You can inject
"wait for traffic lights to pick your nose" and get fined 200 yuan
