Young girls are being hunted by young men online who are coercing their vulnerable victims into carrying out "twisted" acts of violence, the new head of the federal police warns.

In an address to the National Press Club in Canberra on Wednesday, Krissy Barrett will announce three domestic arrests and 59 alleged offenders identified as members of decentralised online crime networks.

"In this new, twisted type of gamification, perpetrators reach a new status or new level in their group when they provide more content showing more extreme acts of depravity and sadism," she will say.

"These crimes are now spilling into the real world and have real-world consequences."

The creation of a new taskforce will crack down on these networks and "crime-influencer" perpetrators.

Young people have be

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