The EU’s industry chief Thierry Breton travelled to Silicon Valley this week to prep tech giants for sweeping new rules governing social media, AI, and data. Breton also made the trip to inaugurate the Commission’s first-ever office in Silicon Valley, as the bloc looks to plant its flag firmly on big tech’s home turf.   EU officials entered Twitter’s headquarters yesterday to conduct a mock exercise with the company’s staff to analyse its handling of issues such as Russian propaganda, fake news, and criminal activity.  This “stress test” was aimed at preparing Twitter for the bloc’s new Digital Services Act, which…

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