Subject = engineering Description = Harley Engineering specialise in the design, manufacture and installation of welded and fabricated sheet metal products. Category = engineering
in general usage is synonymous with safety, but as a technical term
security
means that something not only is secure but that it has been secured. For example, In telecommunication, the term
security
has the following meanings:
With respect to classified matter, the condition that prevents unauthorized persons from having access to official information that is safeguarded in the interests of national
security
. A simple and clear definition of effective
security
could be: a secure system is a system which does exactly what we want it to do and nothing that we don't want it to do even when someone else tries to make it behave differently. It is an important point that information
security
is, inherently and necessarily, neither hermetic nor watertight nor perfectible. No one can ever eradicate all risk of improper or capricious use of any information. The level of information
security
sought in any particular situation should be commensurate with the value of the information and the loss, financial or otherwise, that might accrue from improper use.Historically, up to about 1990, confidentiality was the most important element of information
security
, followed by integrity, and then availability. By 2001, changing use and expectation patterns had moved availability to the top of most versions of this priority list. The first goal of modern information
security
has, in effect, become to ensure that systems are predictably dependable in the face of all sorts of malice, and particularly in the face of denial of service attacks. Technological advances, principally in the field of
computer
s, have now allowed the creation of far more complex systems than before, with new and complex
security
problems. Because modern
security
systems cut across many areas of human endeavor,
security
engineers not only need consider the mathematical and physical properties of systems; they also need to consider attacks on the people who use and form parts of those
