In June 2025, it was reported that five teenagers—mostly under 18—were detained after being radicalized online by the Islamic State (ISIS).
Czech Security Information Service (BIS) officials noted that the teenagers did not know each other in person but became radicalized very quickly through social media propaganda. czech teen recruiting
Simultaneously, Czech authorities have been forced to act against an opposing, covert form of recruitment happening online. In June 2025, it was reported that five