#Use of the Internet by terrorist organizations The main ways in which terrorist organizations use the Internet to promote and recruit extreme ideas include: -**Social media communication**: Use mainstream platforms and encrypted communication applications to quickly spread ideological content -**Targeted content**: Produce promotional materials for specific groups of people, paying special attention to groups that may feel marginalized by society -**Digital narrative**: Build attractive narratives through professionally produced videos, images, and text -**"Echo chamber" effect**: Create a closed online community to strengthen extreme views -**Decentralized operation**: Use a distributed network structure to avoid supervision This kind of network utilization has brought major challenges to counter-terrorism work, and it is necessary for the government, technology companies, and civil society to work together to balance security needs with privacy and freedom of expression.