NEW YORK — Almost every lesson on Internet safety warns against posting personal information such as phone numbers and school names.

Researchers are now suggesting, though, that such advice, however well-intentioned, doesn't necessarily make children safer from predators and related threats.

In a recent study published in the Archives of Pediatrics and Adolescent Medicine, researchers found no evidence that sharing personal information increases the chances of online victimization, such as unwanted sexual solicitation and harassment.

Rather, victimization is more likely to result from other online behavior, such as talking about sex with people met online and intentionally embarrassing someone else on the Internet.

"For a long time, we really didn't know," said Michele Ybarra, one of the study's authors. "It made sense if you post or send information you increase your risk. It's also a very easy message: Don't post personal information and you'll be safe."

But Ybarra, who is president of the nonprofit Internet Solutions for Kids, warned that parents and educators must now reassess the lessons, saying resources may be wasted on tips that do not address the underlying problem.

Instead of discouraging children from communicating, she said, the better approach is to teach them about what at-risk behaviors to avoid and warning signs to spot.

"We now need to be a lot more specific and accurate in our message," she said.

The research, published in February, was based on telephone surveys of 1,500 Internet users ages 10 to 17.

In a separate study of 2,574 law-enforcement agencies, researchers found that online sex crimes rarely involve offenders lying about their ages or sexual motives. The 2004 study, published in Journal of Adolescent Health, said offenders generally aren't strangers, and pedophiles aren't luring unsuspecting children by pretending to be a peer.

"Most of these sexual-victimization (cases) happen at the hands of people they know, and a lot happen at the hands of peers," said Janis Wolak, co-author of both studies and a researcher with the University of New Hampshire's Crimes Against Children Research Center.

The research also found that online victims tend to be teens with troubles offline, such as poor relationships with parents, loneliness and depression.

"A lot of parents, I think, can breathe a big sigh of relief," said Anne Collier, editor of the online newsletter Net Family News. "If their kids are just socializing with their friends online, they are going to be fine."