If you find your images or videos somewhere you didn't put them, here is some advice from Grace and Amelia -
- Report the website
- Tell a family member
- Don't blame yourself!
Keeping yourself safe
Remember that whatever you put online can stay online, and it's a good idea to keep accounts private so only your real friends and family can see your stuff.
It's also really important to get permission from friends and family when posting photos of them - just like they should get yours.
Here's why it's not a good idea to make your mate into a meme, and some tips on being smart on social media.
If you've run into a problem online, you can find more help and advice here.
