Insider threat detection gives an organisation the ability to identify risky activity involving trusted access, but only if the capability is designed around the risks that matter to that organisation. GSA provides independent advice on insider threat detection and monitoring: defining what the organisation needs to detect, designing the use cases, and evaluating or improving the technology that delivers them.
What Insider Risk Monitoring Is Designed to Detect
Good monitoring starts from behaviours and scenarios, not products. Depending on the organisation, the detection requirement may include unusual access to sensitive information, movement of data towards exfiltration routes, misuse of privileged accounts, activity around departure or role change, and patterns that suggest an account, or an individual, may be compromised.
Many organisations monitor only part of this, typically data loss, leaving other categories of risky behaviour without coverage.
Why Technology Alone Is Not an Insider Risk Programme
Monitoring platforms provide necessary technical visibility, but a programme built entirely around technical detection misses an important part of its early-warning capability: the behavioural indicators that may be visible to colleagues, managers and HR before related activity appears in a log. Technology deployed without governance can also generate alerts the organisation is not set up to assess consistently, and monitoring without an agreed privacy framework can undermine the employee trust the programme depends on.
This is not an argument against the technology. It is the reason detection needs to sit inside a governed programme, with human judgement applied to what the tools surface.
Developing Insider Risk Detection Use Cases
GSA designs detection programmes by starting with the client’s risk scenarios: what would an incident look like here, who could cause it, and what would it leave visible? From those scenarios come the specific use cases, the defined patterns the tooling should alert on, and the data each use case requires. GSA supports both the initial development of use cases and their ongoing maintenance, because the threat and the organisation both change.
Defining the detection requirement first has a practical benefit: it establishes what any platform must do before one is chosen.
DLP, SIEM and User Behaviour Analytics
Three common technology capabilities used in insider risk detection are DLP, SIEM and UEBA. Data loss prevention (DLP) tools control and record the movement of sensitive information across defined channels. SIEM platforms aggregate and correlate security event data from multiple sources, and carry insider-specific detection rules and use cases. User and entity behaviour analytics (UEBA) uses activity data and analytical models to identify behaviour that differs from expected patterns and may warrant further review. Each covers part of the problem; none covers it all, and their value depends on the quality of the use cases, the data sources available and the governance around them.
Reviewing Existing Insider Risk Technology
Many organisations already own more detection capability than they use. GSA reviews existing tool stacks against the client’s actual detection requirement, covering coverage, configuration, use cases, integration and alert handling, and provides independent evaluation of insider risk platforms where new investment is being considered. GSA assesses technologies against the client’s requirements, existing environment and intended detection outcomes rather than beginning with a predetermined product choice.
Microsoft Purview and Other IRM Platforms
Organisations in the Microsoft ecosystem often ask how far Purview’s insider risk and compliance capabilities take them. Microsoft Purview and other insider-risk technologies can provide valuable monitoring, policy and analytical capabilities. Their effectiveness depends on the governance, use cases, data sources, investigation processes and human judgement around them, and on how well they are configured for the organisation’s specific risks.
GSA helps organisations assess how existing technology, Microsoft or otherwise, fits within the wider insider risk programme, get more value from what is already licensed, and identify where additional organisational or technical capability may be required. The underlying principle applies to every platform: technology supports an insider risk programme; it does not define the whole programme.
Technical Controls Supporting Insider Risk
Detection works best alongside controls that reduce the opportunity in the first place: privileged access management, disciplined joiners-movers-leavers processes, identity management, DLP configuration and proportionate monitoring scope. GSA’s technical controls review covers these areas and connects them back to programme design.
GSA Cyber and Insider Risk Expertise
Detection design and technical review draw on GSA’s Cyber Security and Resilience practice. Mark Raeburn provides senior cyber and resilience experience; Anthony Dickinson supports technical delivery, security controls and technical assurance; Bill Trent connects the technical layer to the wider insider risk programme. Where monitoring surfaces something that needs investigating, GSA’s insider threat investigation capability is available within the same group.