  As many industries shift towards centralised controlled information systems
for monitoring and control, more importance is being placed upon technologies
such as Supervisory Control and Data Acquisitions industrial systems (SCADA).
This focus on integration and interoperability presents numerous challenges for
security personnel and organisational management alike. It becomes paramount
therefore to reciprocate this new direction within an organisation with
adequate plans and frameworks that ensure protection and security of its SCADA
architecture. A clear understanding of the relevant threats and vulnerabilities
is critical for adopting/developing appropriate policy and frameworks. To this
end, in this research we identify and analyse relevant SCADA security threats
and vulnerabilities and present a simple scheme to classify them for better
understanding.
