动真格了！手机必须内置这类功能，二手交易迎来“最严监管期”

Core Viewpoint - The article discusses the importance of securely handling old mobile phones before selling or recycling them, highlighting the risks of data recovery and the introduction of a new national standard for data deletion in electronic devices. Group 1: Data Recovery Risks - Many second-hand phone recycling stores can recover deleted data, posing risks of fraud and extortion [1][2] - Simply performing a factory reset only results in "logical deletion," leaving the actual data recoverable [3] Group 2: New National Standard - A new mandatory national standard titled "Data Security Technology Electronic Product Information Deletion Technical Requirements" will be implemented on January 1, 2027 [5] - The standard mandates irreversible data deletion methods, ensuring data cannot be recovered by any means [9] Group 3: Data Deletion Methods - The standard specifies two core methods for data deletion: digital overwriting and block erasure [9] - Digital overwriting involves writing meaningless data to storage units, requiring at least three overwrites for magnetic media [10] and one for semiconductor media [11] - Block erasure is a hardware-level method that clears all data in a storage block simultaneously, providing a faster and more thorough deletion [12] Group 4: Responsibilities of Manufacturers and Recyclers - Electronic product manufacturers must integrate a "one-click destruction" feature or provide free deletion tools/services [15][16] - Recyclers must inform users about data deletion, use compliant tools, and maintain records of deletion for three years [18][20] Group 5: Impact on Recycling Industry - The new regulations may increase operational costs for recycling companies, potentially leading to lower buyback prices for consumers [26] - However, the regulations aim to create a more transparent and secure recycling environment, reducing the prevalence of non-compliant recyclers [27]