Cyber Security Solution services include the design of secure collaboration solutions (Unified Communication and Messaging), design and implementation of security infrastructures with a particular focus on document classification and protection, and secure web applications. Services provided are:
 Design and implementation of turn-key SOC solutions
 Network and application design
 Data and network protection
 Data loss and leakage prevention
 Endpoint security
 Secure/certified mail
 Identity management, PKI and digital signatures

PKI - здесь public или private key infrastructure?

Спасибо.