Welcome to Thinkuknow Thinkuknow is the education programme from NCA-CEOP, a UK organisation which protects children both online and offline. Explore one of the six Thinkuknow websites for advice about staying safe when you're on a phone, tablet or computer. Access your fifth #OnlineSafetyAtHomepack with new activities for parents and carers to use at home: 4-5s 5-7s 8-10s 11-13s 14+ Share our new video for parents and carers Our short video provides parents and carers with: