The Federal Trade Commission on Wednesday proposed sweeping changes to bolster the key federal rule that has protected children’s privacy online, in one of the most significant attempts by the U.S. government to strengthen consumer privacy online in more than a decade.

The changes are intended to strengthen the rules underlying the Children’s Online Privacy Protection Act of 1998. Regulators said the moves would “shift the burden” of online safety from parents to apps and other digital services while curbing how platforms may use and monetize children’s data.

Among other things, the proposed changes would require certain online services to turn off targeted advertising by default for children under 13. They would prohibit the online services from using personal details like a child’s cellphone number to induce youngsters to stay on their platforms longer. That means online services would no longer be able to use personal data to bombard young children with push notifications.

The proposed updates would also strengthen security requirements for online services that collect children’s data as well as limit the length of time online services could keep that information. And they would limit the collection of student data by learning apps and other educational-tech providers, by allowing schools to consent to the collection of children’s personal details only for educational purposes, not commercial purposes.