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An editorial published in Al Naba, ISIS’s official media outlet, frames the holiday period as a “season of terror.” 

An editorial published in Al Naba, ISIS’s official media outlet, frames the holiday period as a “season of terror.” The message explicitly calls for revenge against the enemies of Allah, naming Jews and Christians, and encourages attacks in crowded public spaces in the United States, Europe, and Israel.

At the same time, multiple pro-ISIS media channels have circulated visuals on social media promoting so-called “lone wolf” violence ahead of Christmas. These materials rely on coded language such as “Angry Lions” and festive imagery to encourage self-activated attacks while deliberately avoiding direct operational guidance.

A second ISIS-linked poster released the same day again exploits Christmas symbolism and uses “predator” coded language to reinforce lone-actor messaging.

The repetition and timing of these releases underscore ISIS’s intent to prime opportunistic attacks targeting holiday crowds.

Incident Details

Type of Incident: Info
Date of Incident: December 25, 2025
City:
Country:

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About Sentinel

SENTINEL is a European project funded by the European Commission and led by the Security and Crisis Centre (SACC by EJC), the security arm of the European Jewish Congress. It brings together the International Centre for Counter-Terrorism (ICCT), national-level Jewish communities from Austria, Czech Republic, Hungary, Italy, and Spain, the European Union of Jewish Students, with the support of the Italian Carabinieri and the Police Presidium of the Czech Republic.

The project is designed to strengthen the protection of Jewish places of worship across the European Union through a coordinated set of activities over a three-year period.

SENTINEL will harness AI-enhanced open-source intelligence to monitor and assess current, emerging, and future threats. It will also equip Jewish communities with practical tools, including a mobile security application with a panic button and an interactive map built on real-time incident data.

Training and capacity-building are at the core of the project. These include scenario-based security exercises, crisis management seminars, and both in-person and online training sessions for community security trustees. SENTINEL will also organise EU-wide and local conferences to foster collaboration between Jewish communities, public authorities, and law enforcement agencies.

Complementing these efforts, national and local workshops will promote knowledge-sharing and preparedness, alongside pilot training programmes for law enforcement. A dedicated podcast series will help raise awareness by exploring threat assessments and potential responses.

With its wide-reaching and inclusive approach, SENTINEL will directly benefit to Jewish communities across 23 EU Member States, enhancing resilience, strengthening preparedness, and building long-term cooperation with law enforcement to meet today’s evolving security challenges.