In an announcement on the company's website, G4S indicates that it now offers highly secure cold storage for cryptocurrency private keys. It uses its ...
source https://www.google.com/url?rct=j&sa=t&url=https://coingeek.com/security-services-company-g4s-gets-cryptocurrency/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNG_6IxVV0BAUY3IUGyWos90kvD0pw
