As many as one in ten young people carry out trolling attacks, with a third of youngsters the subject of online abuse.
More than a quarter of teenagers aged 14 to 18, say they have been the victim of regular attacks, with the majority of criticism about the victim's appearance.
Research from youth volunteering charity vInspired also found that a third of youngsters have lost confidence from trolling, yet nearly a quarter of teenagers admit to finding it funny.
The charity today launches its campaign Lolz not Trolls to tackle the problem.
More top news
Further one in eight expect to be aged between 71 and 80 years when they finally stop work, according to survey.
The team behind an irreverent US card game made more than $71,000 by giving people the chance to pay $5 without getting anything in return.
Cuts and rising cost of adult social care will leave councils underfunded, warns Local Government Association.