Facebook's new rebrand logo Meta is seen on smartphone in front of displayed logo of Facebook, Messenger, Instagram, Whatsapp and Oculus in this illustration picture taken October 28, 2021.
Ofcom, which gained new powers when the Online Safety Act came into law last month, said children were a key priority.
It said its role would be to force firms, such as Facebook and Instagram owner Meta (META.O), to tackle the causes of online harm by making their services safer.
Chief Executive Melanie Dawes said Ofcom was wasting no time in setting out how it expected tech firms to protect people from illegal harm online.
"Children have told us about the dangers they face, and we're determined to create a safer life online for young people in particular," she said.
Persons:
Dado Ruvic, Melanie Dawes, we're, Paul Sandle, Mark Potter
Organizations:
Facebook, REUTERS, Ofcom, Meta, Thomson