MAVAST stands for Multi Agency Vulnerability Assessment Tool. MAVAST is a new European vulnerability assessment tool for violent radicalisation. The tool is developed to support multidisciplinary teams in assessing how vulnerable an individual is to violently radicalise. In addition, it identifies which information is needed to increase the reliability of the assessment and provides directions for potential interventions.

MAVAST combines 80 risk indicators of individuals, such as (changes in) their behaviour, political views, family circumstances, personal factors and social network, to arrive at an evaluation of the vulnerability to (at some point) show violent radical behaviour.

MAVAST is designed for multi-agency and multidisciplinary teams, for example consisting of police, municipalities, social work, and schools. The tool explicitly addresses these different agencies and disciplines by allowing for multiple perspectives on the vulnerability assessment of an individual. In addition, MAVAST can be used within and across European countries, for example in cross-border cases.

MAVAST was developed by a multidisciplinary team at TNO, the Netherlands Organisation for applied scientific research. TNO worked on MAVAST in the context of the EU project Pericles. Pericles is a three-year Horizon 2020 Project (2017-2020) funded by the European Union to develop a comprehensive approach to prevent and counter violent radicalisation and extremism.


MAVAST works with an input of 80 indicators describing specific (changes in) behaviour and personal factors of the individual under evaluation. These indicators are scored by (a team of) multiple professionals. As such, MAVAST ensures that every perspective in the multidisciplinary team is taken into account.

The responses to the 80 indicators provide input for a so-called Bayesian model that underlies the vulnerability assessment tool. This model results in an assessment of vulnerability from different perspectives, such as a criminological and a mental health perspective. This outcome includes an indication of additional information that could increase the reliability of the outcome.

The multidisciplinary team responsible for the vulnerability assessment is supported by the MAVAST tools in three steps. First, the professionals are requested to indicate how vulnerable they think specific individuals are by scoring 80 indicators. Second, the team is supported by MAVAST in discussing the outcomes of the first step and come to a consensus about the vulnerability of the individual under assessment. Third, the professional team members decide together about the individual’s vulnerability and follow up.

What is MAVAST?

Access MAVAST Tool

The MAVAST tool is a web-based application that can be registered and accesses via the link below. In order to be able to verify the eligibility of users, applications must be accompanied by the full officials’ names, email addresses, job titles and work contact details (agency name, postal address, phone and fax).

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Vulnerability Assessment Tool
Access Trial Version


For more information about MAVAST, please contact the following person:

Mirjam Huis in ‘t Veld

Terms of Use

This tool is under licesee but access to a free trial version of the tool can be found by following the link above.

Vulnerability assessment for violent radicalisation is a process that should be carefully executed. MAVAST supports this carefulness in several ways. The most important measure is that the final conclusion about vulnerability is not taken by the tool, but by the team.