旧手机不能随便卖了？史上最严新规出台

Core Viewpoint - The article discusses a new national standard in China aimed at ensuring the secure deletion of data from electronic devices, emphasizing the transition from "fake deletion" to "true deletion" methods for data security [15][16][19]. Group 1: New National Standard - A new national standard titled "Data Security Technology Electronic Product Information Deletion Technical Requirements" will be implemented on January 1, 2027, and is mandatory for manufacturers and recyclers [15][18]. - This standard applies to a wide range of electronic products, including smartphones, tablets, laptops, and smartwatches, effectively enhancing the security of second-hand digital products [19][42]. Group 2: Data Deletion Methods - The standard mandates the use of two primary techniques for data deletion: digital overwriting and block erasure [23]. - Digital overwriting involves repeatedly covering existing data with new data until it is completely obscured, while block erasure entails removing entire data blocks at once, making recovery impossible [24][28]. Group 3: Responsibilities of Manufacturers and Recyclers - Manufacturers are required to integrate a "data destruction" feature in new devices or provide third-party tools for data deletion, ensuring users are informed about the deletion process and its implications [32][33]. - Recyclers must actively remind users to clear their data before any transaction, cannot access or retain any data without consent, and must use methods compliant with the new standard [36][38]. Group 4: Market Context and User Concerns - There are over 6 billion idle mobile phones in China, with only 10% entering the second-hand market, indicating a significant opportunity for improvement in the recycling process [42]. - Users have expressed relief over the new regulations but also concerns about the enforcement of these standards [46][47].