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Information Security Glossary - Q & R

Glossary – Q

Quadrant – This is the name of the technology that makes cryptographic equipment tamper-proof. 

Qualitative Risk Assessment – A subjective estimation of risk based often on ranges (e.g. low, medium, high). 

Quantitative Risk Assessment  An objective evaluation of risk based on measurable factors such as how much, how many (often using historical values of occurrence or cost). 

Glossary – R

Ransomware – Software that prevents a user from accessing their own files or network, only releasing the information after receiving payment. 

Resilience – The ability to provide and maintain an acceptable level of service in the face of faults and challenges to normal operation. 

Return on Investment – Assessing the value of a return against the initial cost. 

Risk – The combination of the probability of an event and its consequences. 

Risk Analysis – Estimating the likelihood a threat will exploit a vulnerability and the impact level if it does. 

Risk Appetite – The level of risk that an organisation is prepared to accept before action is deemed necessary to reduce it. It represents a balance between the potential benefits of innovation and the threats that change inevitably brings. 

Risk Assessment – The determination of the quantitive or qualitative value of risk related to a recognised threat. 

Risk Avoidance – This includes not performing an activity that could carry risk. 

Risk Evaluation – Combining the likelihood and impact to determine a risk rating. 

Risk Identification – Understanding what threats and vulnerabilities might have an impact on the assets or organisation. 

Risk Level – The combination of the likelihood and impact of a threat exploiting a vulnerability. 

Risk Monitoring – Checking & re-assessing levels of risk over time. 

Risk Reduction – Taking action (e.g. implementing controls) to reduce either the likelihood or impact or both, of a risk. 

Risk Treatment  Deciding to avoid, reduce, transfer or accept a risk and then monitoring and reviewing the risk over time. 

Glossary Index:

 A - C,    D - G,    H - L,    M - P,    Q - R,    S - Z.

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