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integrity of data and information systems

This revision notes summarises the main kinds of physical security controls that are used to protect information systems


Physical Access Controls

Access controls are designed to prevent unauthorised access to hardware and/or data storage. The main kinds of access control are:

 

 

Human error: e.g. entering incorrect transctions; failing to spot and correct errors; processing the wrong information; accidentally deleting data
Technical errors: e.g. hardware that fails or software that crashes during transaction processing
Accidents and disasters: e.g. floods, fire
Fraud - deliberate attempts to corrupt or amend previously legitimate data and information
Commercial espionage: e.g. competitors deliberately gaining access to commercially-sensitive data (e.g. customer details; pricing and profit margin data, designs)
Malicious damage: where an employee or other person deliberately sets out to destroy or damage data and systems (e.g. hackers, creators of viruses)
 

 

How Can Information Systems be Made More Secure?

There is no such thing as failsafe security for information systems. When designing security controls, a business needs to address the following factors;

Prevention: What can be done to prevent security accidents, errors and breaches? Physical security controls (see more detailed revision note) are a
Detection:
Accidents and disasters: e.g. floods, fire
Fraud - deliberate attempts to corrupt or amend previously legitimate data and information
Commercial espionage: e.g. competitors deliberately gaining access to commercially-sensitive data (e.g. customer details; pricing and profit margin data, designs)
Malicious damage: where an employee or other person deliberately sets out to destroy or damage data and systems (e.g. hackers, creators of viruses)
 

 

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