SCOTTSVILLE, Va.–(BUSINESS WIRE)– #Cybersecurity–Castle Shield Holdings, LLC., today released the first version of its Hermes secure email encryption add-in for Microsoft Office Outlook. Hermes uses strong elliptic curve Diffie-Hellman (ECDH) asymmetric encryption protection and the company’s licensed quantum-resistant symmetric Polymorphic Encryption Core (PEC) algorithm that is FIPS 140-2 validated and certified. Hermes works with the Microsoft Outlook Windows client and integrates seamlessly into the curr