The probability of something going wrong (e.g. a threat and its associated misbehaviour). It is the inverse of trustworthiness. One of two measures used to calculate risk levels.


A situation, action or event, (deliberate or accidental), which could cause a misbehaviour and/or result in harm to a system, network or organisation.


An unwanted change in status or abnormal behaviour of an asset. They are caused by threats.


System Security Modeller (SSM) is a risk analysis and compliance tool for businesses to easily identify cyber security threats, policy compliance needs, and threat mitigation strategies.

Cyber Environment

The total set of relationships between human and non-human assets, external contexts and constraints, policies and actions which make up a system or network.

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