[FINAL]
services are protected from cyber-attack. An organisational understanding of risk to
essential services informs the use of robust and reliable protective security measures to
effectively limit opportunities for attackers to compromise networks and systems.
B.5 Resilient Networks & Systems:
●
The organisation builds resilience against cyber-attack and system failure into the
design, implementation, operation and management of systems that support the delivery
of essential services.
B.6 Staff Awareness & Training:
●
Staff have appropriate awareness, knowledge and skills to carry out their organisational
roles effectively in relation to the security of network and information systems supporting
the delivery of essential services.
Explanation
Service Protection Policies and Processes: The organisation’s approach to securing
network and information systems that support essential services should be defined in a set
of comprehensive security policies with associated processes. It is essential that these
policies and processes are more than just a paper exercise and steps must be taken to
ensure that the policies and processes are well described, communicated and effectively
implemented.
Policies and processes should be written with the intended recipient community in mind.
For example, the message or direction communicated to IT staff will be different from that
communicated to senior managers. There should be mechanisms in place to validate the
implementation and effectiveness of policies and processes where these are relied upon
for the security of the essential service. Such mechanisms should also support an
organisational ability to enforce compliance with policies and processes when necessary.
To be effective, service protection policies and processes need to be realistic, i.e. based
on a clear understanding of the way people act and make decisions in the workplace,
particularly in relation to security. If they are developed without this understanding there is
a significant risk that service protection policies and processes will be routinely
circumvented as people use workarounds and shortcuts to achieve their work objectives.
Identity & Access Control: It is important that the organisation is clear about who (or what
in the case of automated functions) has authorisation to interact with the network and
information system of an essential service in any way or access associated sensitive data.
Rights granted should be carefully controlled, especially where those rights provide an
ability to materially affect the delivery of the essential service. Rights granted should be
periodically reviewed and technically removed when no longer required such as when an
individual changes role or perhaps leaves the organisation.
Users, devices and systems should be appropriately verified, authenticated and authorised
before access to data or services is granted. Verification of a user’s identity (they are who
they say they are) is a prerequisite for issuing credentials, authentication and access
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