办公室大扫除也有泄密风险，国安部门提示注意这些细节

Group 1 - The importance of year-end cleaning is emphasized as a time to organize work and optimize the environment while maintaining confidentiality [1] - Sensitive materials should be handled according to their confidentiality level, ensuring they are not mixed with ordinary items and are properly disposed of or destroyed [2] - Electronic data must be thoroughly cleared or professionally destroyed to prevent recovery of sensitive information, and proper procedures should be followed when disposing of office equipment [2][3] Group 2 - Sensitive items should not be left in visible places during office cleaning to avoid unauthorized access [3] - During personnel transitions, strict adherence to handover protocols is necessary to prevent loss or mishandling of important documents [3] - The year-end cleaning serves as a test of confidentiality awareness, requiring staff in sensitive positions to remain vigilant and responsible for safeguarding confidential information [3]