Which of the following security risks associated with electronic commerce is false? A firewall is a system used to insulate an organization's intranet from the internet. A common firewall configuration employs two firewalls- a network level firewall and an application level firewall. A digital certificate is an electronic authentication technique that can be used to authenticate the identity of the sender of a message In a public key management system a certification authority will issue and revoke digital certificates Encryption can resolve all security concerns