Radicalisation

Radicalisation is the gradual, context-dependent process through which a person or group comes to accept an extremist worldview that legitimises or supports violence for ideological goals. Online radicalisation occurs when digital communication accelerates exposure, reinforcement, recruitment, networking or mobilisation. Radical opinions alone do not constitute violent radicalisation, and no universal pathway leads from belief to violence.

From vulnerability to violent participation

Online influence usually interacts with personal grievances and offline circumstances rather than independently causing violence. No single profile or cause reliably identifies who will progress towards violence.

• Identity conflict, perceived injustice, alienation or a search for belonging may create susceptibility, but none makes violence inevitable.
• Repeated propaganda and selective information can create an echo chamber in which hostility appears normal and extremist claims face little challenge.
• Online communities can offer identity, status and belonging, while peer approval strengthens commitment and isolates individuals from alternative viewpoints.
• Recruiters may personalise messages, exploit grievances and use dehumanising narratives to portray opponents as threats and violence as morally legitimate.
• Public engagement may shift into private communication, where recruiters build trust, test commitment and connect individuals to facilitators.
• Participation becomes more likely when ideological acceptance combines with intent, opportunity, operational guidance, logistical support and a triggering event.

Role of organised actors

Organised actors can convert sympathy into mobilisation by linking narratives with networks and material capabilities.

• External state actors may assist proxy organisations or information operations that deepen social divisions and amplify extremist narratives.
• Non-state actors may provide propaganda, recruiters, peer networks, training, finance or logistical assistance.
• Local social ties can make online messaging more credible and facilitate recruitment into an organisation or informal network.
• Cross-border networks can widen access to propaganda, finance, operational knowledge and organisational support.
• Radicalisation concerns acceptance of beliefs legitimising violence, while recruitment means induction into an organisation or network. Many people with extreme beliefs never commit violence.

Prevention and response

Effective prevention must address both harmful online activity and the vulnerabilities that make extremist messaging persuasive.

• Targeted intelligence and lawful investigation can identify recruiters, violent networks, financing and movement from propaganda towards operational planning.
• Digital literacy, education, community engagement and credible counter-narratives can reduce susceptibility and challenge extremist interpretations.
• Platforms and authorities can act against unlawful content and networks while respecting constitutional rights and avoiding indiscriminate profiling.
• Disengagement, counselling and rehabilitation are important because prevention includes helping individuals leave violent networks and reintegrate into society.