The company said the change could help the platform fight harmful behavior it wouldn't otherwise be able to fully address under its existing rules, reports Engadget.
Unlike "coordinated inauthentic behavior", which is Facebook's policy for dealing with harm that comes from networks of fake accounts, coordinated social harm gives the company a framework to address harmful actions from legitimate accounts, the report said.
During a call with reporters, the company's head of security policy Nathaniel Gleicher said the policy is necessary because bad actors are increasingly trying to "blur the lines" between authentic and inauthentic behavior, the report said.
"We are seeing groups that pose a risk of significant social harm, that also engage in violations on our platform, but don't necessarily rise to the level for either of those where we'd enforce against for inauthenticity under CIB (coordinated inauthentic behavior) or under our dangerous organization's policy," Gleicher said.
"So this protocol is designed to capture these groups that are sort of in-between spaces."
Gleicher mentioned that the new protocols could help Facebook address networks of accounts spreading anti-vaccine misinformation or groups trying to organize political violence.