CBBC star was bullied online

CBBC star Shannon Flynn talks to Newsround about her experiences being bullied online.

The Friday Download presenter used to star in Waterloo Road - the TV show about a school.

She said she started getting mean messages on social networking sites.

She was very upset by the messages and told her parents before learning to ignore them.

Guide: Tips for staying safe online

Shannon appears in 'Cyberbullying - a Newsround special' on Tuesday 11 February at 5.25pm.

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