Carole Cadwalladr

Journalist, Guardian and Observer

Carole Cadwalladr is an investigative reporter and feature writer for The Guardian and its sister paper, The Observer. In 2018, she broke the story of the Facebook–Cambridge Analytica data breach, revealing how Cambridge Analytica harvested the personal data of around 87 million Facebook users without their permission to target them with political ads during the 2016 election. It was the largest data breach in Facebook history. The investigation resulted in Mark Zuckerberg being called before Congress and Facebook losing more than $100 billion from its share price. She has also uncovered multiple crimes committed during the European referendum and evidence of Russian interference in Brexit.

Cadwalladr's work has won a Polk Award and the Orwell Prize for political journalism, and she was named a Pulitzer Prize finalist for National Reporting in 2019. 


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