People are being advised to be careful of what content they share on the internet - and how to avoid online bullying.
Today is Safer Internet Day when we're reminded of the steps we can take to make the internet a better place.
Youth information website SpunOut.ie is partnering with Twitter to launch a new "Online Safety Hub" to coincide with Safer Internet Day.
Ian Power, Executive Director of SpunOut.ie says people sometimes find that content they share is made public, without their knowledge or permission: