The privacy experts who spoke with WIRED described Rumble, Quora, and WeChat as unusual suspects but declined to speculate on the rationale behind their inclusion in the investigation. Josh Golin, executive director of the nonprofit Fairplay, which advocates for digital safety for kids, says concerns aren’t always obvious. Few advocacy groups worried about Pinterest, for example, until the case of a British teen who died from self-harm following exposure to sensitive content on the platform, he says.

Paxton’s press release last month called his new investigation “a critical step toward ensuring that social media and AI companies comply with our laws designed to protect children from exploitation and harm.”

The United States Congress has never passed a comprehensive privacy law, and it hasn’t significantly updated child online safety rules in a quarter century. That’s left state lawmakers and regulators to play a big role.

Paxton’s investigation centers on compliance with Texas’ Securing Children Online through Parental Empowerment Act or SCOPE, which went into effect this past September. It applies to any website or app with social media or chat functions and that registers users under the age of 18, making it more expansive than the federal law, which covers only services catering to under-13 users.

SCOPE requires services to ask for users’ age and provide parents or guardians power over kids’ account settings and user data. Companies also are barred from selling information gathered about minors without parental permission. In October, Paxton sued TikTok for allegedly violating the law by providing inadequate parental controls and disclosing data without consent. TikTok has denied the allegations.

The investigation announced last month also referenced the Texas Data Privacy and Security Act, or