How to tell if Facebook shared your personal data with Cambridge Analytica

Were you among the millions affected by Cambridge Analytica's Facebook data harvest? Here's how to find out.

The controversy surrounding Cambridge Analytica has been building over recent weeks, following an investigation that uncovered how Facebook data of millions was leveraged to target political advertisements.

As reported by The New York Times, the core of Cambridge Analytica's research was conducted via a personality survey tied to a Facebook log-in. After logging in with your credentials, the app could collect your profile information to aid research. This alone rounded up the data of over 270,000 reported users, all in accordance with Facebook's policies.

Although the survey used to fuel Cambridge Analytica's targeting was completed by only a fraction of affected individuals, data harvesting was seen on a much wider scale. Taking advantage of default privacy settings, the app was able to expand its reach to unknowing Facebook friends. This leads to the situation we find ourselves in today – millions of affected users, many unknowing such a survey or firm existed.

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