NEW YORK — A task force charged with assessing technologies for protecting children from unwanted contact online has concluded that no single approach is foolproof and that parental oversight is vital.

The Harvard-led panel, in a report obtained by The Associated Press and scheduled for release today, dismissed prospects for age-verification technologies, the approach favored by many law enforcement officials who had pushed for the creation of the task force.

The yearlong Internet Safety Technical Task Force also played down fears of Internet sexual predators who target children on social-networking sites such as Facebook and MySpace. While citing other dangers such as online bullying, the panel said cases of predators typically involved youths well aware they were meeting an adult for sexual activities.

Technology can be a component in the strategy to protect minors online, but Internet companies “should not overly rely upon any single technology or group of technologies as the primary solution,” the task force said.

“Parents, teachers, mentors, social services, law enforcement and minors themselves all have crucial roles to play in ensuring online safety for all minors,” the report said.

The findings come as little surprise as law enforcement, Internet companies, child-safety advocates and policymakers seek to address fears of Internet sexual predators.

Rather, the report serves to synthesize what many researchers and child-safety advocates have been saying. The report also identifies areas in which more studies are needed — on what sex offenders do at social-networking sites, and how minors are approached sexually by other minors.

Connecticut Attorney General Richard Blumenthal, one of the leading forces behind the task force’s creation, criticized the report for relying on “outdated and inadequate” research to downplay the threat of predators. Blumenthal said the task force should have made more specific recommendations for implementing and improving technologies.

Parry Aftab, a child-safety advocate with task-force member WiredSafety.org, said the group produced a report that essentially “we could have done without spending a year. We could have said there isn’t enough research out there.”

But she said she agreed with its conclusions: Kids are typically at risk because they put themselves at risk rather than because they are tricked, and technology isn’t enough to address that.

The task force was headed by Internet scholars at Harvard University and grew out of an agreement MySpace reached with most state attorneys general a year ago. Members of the panel include Internet service companies and nonprofit groups, including those focused on children’s safety.

The panel’s recommendations are nonbinding.