We're campaigning to get big tech platforms like Google, Facebook and Twitter to become more transparent about how political messages are spread so that we can detect and stop misinformation.
Sign our open letter to Facebook demanding greater transparency of political advertising
Share our guidelines for Google and Facebook's ad transparency databases
Help us thank The Guardian for preventing old news stories from being shared as misinformation, and ask other news publishers to follow their lead!
Tell us your opinions about misinformation and how we should address it by taking our survey