When it comes to the security of Pionex, how does the platform safeguard users' funds and personal information? Are there any notable security measures in place, such as multi-factor authentication, cold storage for cryptocurrency holdings, and regular security audits? Additionally, has Pionex experienced any significant security breaches in the past, and if so, how were they addressed and prevented from happening again? Understanding the level of security provided by Pionex is crucial for investors to make informed decisions.