Facebook is giving developers until April 30 to update their apps to use the new login and Graph API the company introduced in April last year, before apps are updated automatically.

The graph API is the primary way for Facebook apps to read and write to the Facebook social graph. Many apps use this API, but there are limitations to what it can do.

Facebook does not allow completely anonymous use of the social graph's API. In order to write data to the graph, your program will first have to request an authentication token.

Yesterday was a rather historic day in the world of social media: Facebook unveiled Open Graph, efforts to build a true social web infrastructure that provides metadata everything: websites ...

Finally, Facebook is allowing developers to run test queries through the Graph API Explorer App using their own access tokens.

The Facebook personality quiz at the centre of the Cambridge Analytica scandal was not an isolated incident. For five years, the Graph API left a gaping hole in Facebook’s defences.

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