Tech Against Terrorism is an organisation working with law enforcement agencies, governments and technology platforms to identify threats, prevent attacks and stop terrorists from exploiting the internet, while protecting freedom of speech. Founded in 2015, it combines research, technology and practical support to help address terrorist and violent extremist activity online.

Its solutions include the Terrorist Content Analytics Platform, which alerts users to and archives verified terrorist content, and the Trusted Flagger Platform, which lets trusted partners submit removal requests to platforms. The organisation also offers a Knowledge Sharing Platform, content alerts, an archive and research resources, and analysis of emerging threats, including terrorist use of generative AI.

For technology companies, Tech Against Terrorism provides free mentorship, tailored advisory support and the Trustmark accreditation for organisations committed to disrupting terrorist activity online while respecting human rights. Its work also includes reports, guides, podcasts, a membership network and dispatches from experts.