Crime by NATASHA BITA Premium Content  One in five Australian "screenagers" has been sent unwanted violent or pornographic material, as cyber creeps target kids online through gaming and social media. One in three teenagers experienced "unwanted contact with a stranger" through online games, social media or email and messaging services in 2020, alarming new data from the federal government's eSafety Commissioner reveals. Police have caught   The eSafety Commissioner has warned that paedophiles are increasingly targeting children online, as cooped-up kids and "screenagers'' spend an average of 14 hours a week in front of screens. "Sometimes very aggressive requests for nudes can be made quite suddenly, right through to very sophisticated long-term grooming efforts,'' the head of e-safety investigations Toby Dagg said yesterday.