YouTube has deleted thousands of videos promoting academic cheating in the last week after a BBC Trending investigation.
The videos all advertised essay-writing services, which can lead to serious penalties for students.
Facebook and Google have been asked by a regulator to stop making money from adverts for these companies.
All the social media companies say they are taking steps to discourage dishonest behaviour.
Read more: https://www.bbc.co.uk/news/blogs-trending-46468389
By Branwen Jeffreys and Edward Main
Education Editor and BBC Trending
Directed by Richard Kenny
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