3 6 Ke·2025-09-15 09:38Core Points - The core issue revolves around Microsoft's UCPD.sys component, which is alleged to contain a backdoor that collects data from users in China while restricting their ability to change default applications [1][2][3] Group 1: UCPD.sys Functionality - UCPD.sys is presented by Microsoft as a "User Choice Protection Driver" aimed at preventing malware from altering default browser settings, but its actual behavior includes writing encrypted data to the system registry and potentially releasing unknown programs [2][3] - The component interferes with user preferences, forcing users to revert to Microsoft’s Edge browser, which can lead to decreased download efficiency and workflow disruptions for professionals [2][5] Group 2: Regional Disparities - UCPD.sys activates data collection mechanisms specifically for users in mainland China, Hong Kong, Macau, and Taiwan, while these mechanisms do not trigger for users in Europe and the US [3][4] - This differential treatment raises concerns about targeted strategies rather than technical limitations, contrasting with Microsoft's compliance with the EU's Digital Markets Act, which promotes user choice [4][5] Group 3: Impact on Chinese Software - The restrictions imposed by UCPD.sys extend to major Chinese software companies, including 360, Tencent, and Lenovo, limiting their functionality and competitive edge within the Windows ecosystem [5][7] - The component acts as a tool for Microsoft to protect its own ecosystem by controlling third-party software interactions, thereby undermining competition [7][10] Group 4: Security Risks - The limitations on Chinese security software due to UCPD.sys could expose users to greater risks, as these tools are hindered from performing their protective functions [10][11] - Historical data indicates that vulnerabilities in Microsoft systems have been exploited for cyberattacks against sensitive sectors in China, raising alarms about the potential misuse of UCPD.sys [8][10] Group 5: User Rights and Transparency - The ongoing situation highlights a broader issue of user rights, with Microsoft’s practices perceived as infringing on user autonomy regarding data collection and software choices [11][12] - Calls for transparency and the restoration of user choice emphasize the need for fair competition and the protection of personal privacy and security in the digital landscape [13][14]