SafeToNet is a UK-based technology company focused on online safety, particularly the protection of children and minors from harmful digital content. The company develops and markets an AI-based content filtering system called HarmBlock, which is designed to prevent the filming, viewing, and sharing of explicit and illegal content — including child sexual abuse material (CSAM) — in real time, including within livestreaming environments. HarmBlock is engineered for deployment at the operating system level, enabling on-device protection that functions even within end-to-end encrypted environments. The solution is described as privacy-centric and is designed to require minimal user setup or onboarding. It can be integrated by device manufacturers, app developers, and platform operators into their products and services. SafeToNet's technology is reported to be active across smart devices in over 130 countries. The company collaborates with a range of governmental and non-governmental partners, including the Internet Watch Foundation, the UK Home Office, the European Parliament, the International Centre for Missing & Exploited Children (ICMEC), WeProtect Global Alliance, and others. The company targets multiple stakeholder groups: technology companies are invited to integrate HarmBlock into their devices and platforms; policymakers are engaged on online safety legislation; and parents are supported as end users seeking child protection tools. SafeToNet also offers HarmBlock-protected smartphones directly to consumers via the HarmBlock brand.