A survey for Safer Internet Day also found about two in five are targeting others online, so they don't get bullied themselves or said it was because of peer pressure.
Today more than 100 countries worldwide, including all 28 countries of the European Union, are celebrating Safer Internet Day (SID) for the twelfth year running.
The theme of Safer Internet Day 2015 is "Let's create a better internet together", inviting children and young people, parents and carers, teachers and educators, or industry and politicians to work together to build a better internet for all.
Simon Bass, CEO, Churches Child Protection Advisory Service (CCPAS) believes churches should be at the forefront of the campaign, speaking to Premier's News Hour, he said: "It's about togetherness, it's about ensuring that there is that dialogue and conversation.
"That parents don't negate their responsibility, that churches don't negate their responsibility because their concerned about not being so technically savvy as children because in actual fact what they bring to the party is the wisdom and the experience that years bring."
Simon Bass, CEO, CCPAS:
