H.R. 3921

Strengthening Transparency and Obligations to Protect Children Suffering from Abuse and Mistreatment Act of 2025 or the STOP CSAM Act of 2025 This bill revises the federal framework governing the prevention of online child sexual exploitation to expand protections for victims, expand requirements for electronic communication service providers and remote computing service providers (providers), and expand related penalties and remedies. The bill extends protections for child victims and witnesses who testify in federal court (e.g., privacy protections) to child victims and witnesses of kidnapping offenses and to child victims and witnesses who were under 18 years of age at the time of the crime, even if they are 18 or older at the time of court proceedings. Additionally, the bill establishes statutory procedures for courts to appoint a trustee to hold restitution payments for certain victims (e.g., minor victims) of offenses involving human trafficking, sexual abuse, child sexual abuse material, illegal sexual activity and related crimes, or crimes of violence. The bill requires providers to report online child sexual exploitation to the CyberTipline (i.e., the national reporting system for online child sexual exploitation) within 60 days. Reports must include specified information, such as information about repeat offenders. The bill establishes criminal and civil penalties for providers who fail to comply with the requirements. Finally, the bill prohibits providers from hosting or storing child pornography or knowingly facilitating the sexual exploitation of children and allows victims to pursue civil remedies.