Encryption has become a necessary part of data security. Best practices have us using encrypted protocols and tunnels, PCI DSS requires encryption of credit card data, and consumer privacy requirements mandate protection of personal information.
Within the PCI DSS encryption is required for the following items:

Wireless (Requirements 2.1.1, 4.1.1)
Non-console administrative access (Requirement 2.3)
Data at rest (Requirement […]