None
A Custom environment that is highly restrictive and secure; it is usually reserved for systems that have the highest threats and associated impacts.
Source(s):
NIST SP 800-70 Rev. 4
Environment encompassing systems with specialized security requirements, in which higher security needs typically result in more limited functionality.
Source(s):
NIST SP 800-70 Rev. 2
[Superseded]
Custom environment encompassing systems with specialized security requirements, in which higher security needs typically result in more limited functionality.
Source(s):
NIST SP 800-70 Rev. 3
[Superseded]