MeSign Technology Limited is a holding company of 360 Group, focusing on the strategic direction of 360 big data security, providing big data security-related products and services based on PKI technology.MeSign is a software company with cloud computing ability to empower client software.MeSign is a CA that have trusted Root CA audited by WebTrust, issue email certificates and document signing certificates for MeSign client software automatically.MeSign is also an internet security company that develops software integrating certificate for digital signature and encryption to secure the data on the Internet.