The Kids Online Safety Act (KOSA) is a bill introduced in the United States Senate by Senators Richard Blumenthal and Marsha Blackburn in February 2022 and reintroduced in May 2023. The bill aims to protect minors from harm on social media platforms by setting out requirements for social media platforms to make safety the default and to give kids and parents tools to help prevent the destructive impact of social media. The bill charges individual state attorneys general with enforcing the bill. KOSA requires social media platforms to act in the best interests of minors who use that platforms products or services, and to prevent or mitigate the heightened risks of harm to minors posed by the platform. The bill requires platforms to prevent or mitigate the promotion of self-harm, suicide, eating disorders, substance abuse, and other matters that pose a risk to a minors physical and mental health, patterns of use that indicate addiction-like behavior, physical harm, online bullying, and harassment of a minor, sexual exploitation, including enticement, grooming, sex trafficking, and sexual abuse of minors and trafficking of online child sexual abuse material, promotion and marketing of products or services that are unlawful for minors, such as illegal drugs, tobacco, or alcohol, and predatory, unfair, or deceptive marketing practices. KOSA also requires platforms to issue annual independent audits that identify the risks of harm to minors and to support parental controls, including being able to control a minors privacy and account settings, restrict purchases and financial transactions by a minor, and track the time spent on a platform. The bill has been criticized by civil rights organizations for potentially enabling censorship, including of material important to marginalized groups. The bill has also been criticized for potentially increasing surveillance and restricting access to information in the name of protecting children online.