London — Instantly recognisable with his pink hair and nose ring, Christopher Wylie claims to have helped create data analysis company Cambridge Analytica before turning whistleblower and becoming "the face" of the crisis engulfing Facebook. Carole Cadwalladr, the Guardian journalist who worked with Wylie for a year on the story, described him as "clever, funny, bitchy, profound, intellectually ravenous, compelling. A master storyteller. A politicker. A data science nerd." The bespectacled 28-year-old describes himself as "the gay Canadian vegan who somehow ended up creating Steve Bannon’s psychological warfare tool," referring to Trump’s former adviser, whom the report said had deep links with Cambridge Analytica. With Wylie’s help, Cadwalladr revealed how Cambridge Analytica scooped up data from millions of Facebook users in the US. They then used the information to build political and psychological profiles so as to create targeted messages for voters. Facebook insists it did not...

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