Implement Data Security as an Element of the Cybersecurity Architecture

MIL1 requirements
a. Sensitive data is protected at rest, at least in an ad hoc manner

MIL2 requirements
b. All data at rest is protected for selected data categories
c. All data in transit is protected for selected data categories
d. Cryptographic controls are implemented for data at rest and data in transit for selected data categories
e. Key management infrastructure (that is, key generation, key storage, key destruction, key update, and key revocation) is implemented to support cryptographic controls
f. Controls to restrict the exfiltration of data (for example, data loss prevention tools) are implemented

MIL3 requirements
g. The cybersecurity architecture includes protections (such as full disk encryption) for data that is stored on assets that may be lost or stolen
h. The cybersecurity architecture includes protections against unauthorized changes to software, firmware, and data