The increase in mobile tier 3 entities, such as laptops and mobile phones, coupled
with the increase in tier 1 and 2 entities, will result in more dynamic operating
environments. Systems and data items will shift rapidly between environments. This
exacerbates the challenges of establishing appropriate access control, monitoring,
and automated decision-making within limited domains of visibility and control.
However, mobile entities that do not maintain connectivity to the broader Internet
will have a smaller window of compromise in any one environment.