1. In terms of safety compliance, Nail has successively passed the three-level protection certification of network security level supervised and certified by the Ministry of Public Security, the certification of ISO20000 information technology service management system and the certification of ISO2700 1 information security management system. Nail also passed SOC2' s safety audit report, which was issued by Ernst & Young Huaming, a world-renowned accounting firm, with the focus on safety, confidentiality and privacy. 2.1October 26th, 2 1, 165438, nail released the white paper of nail safety 3.0. The white paper shows that the data security protection mechanism has been established from eight dimensions: security compliance, security culture, full link security protection, product security, data security, privacy protection, ecological security and exclusive security, regardless of the user's mobile phone or PC contact. 3. Therefore, Nail attaches great importance to protecting users' privacy, and the security of transmitting files is also relatively high.