The Brief – Tuesday 21 April: WPP-Trainline partnership, Musk summoned to Paris, FBI director sues Atlantic

🚂 WPP Media has partnered with Trainline to integrate the rail and coach travel company’s first-party location data into its Open Intelligence for Commerce platform. It is Trainline’s first direct data partnership with an agency group. (WPP Media)

📱 X owner Elon Musk and former CEO Linda Yaccarino have been summoned to Paris to be voluntarily interviewed by French authorities as part of their investigation into the spread of child sexual abuse material (CSAM) and deepfake/nudification content on the platform. (The Guardian)

💸 According to an analysis of IPA Census data, C-suite level salaries at agencies increased to a much larger degree than those for junior roles last year. (Campaign)

⚖️ FBI director Kash Patel has sued The Atlantic and its staff writer Sarah Fitzpatrick over a story that alleged Patel “alarmed colleagues with episodes of excessive drinking and unexplained abscences.” The suit, which The Atlantic has called “meritless”, seeks $250m in damages. (CNN)

📝 Surveillance and analytics company Palantir, which has partnered with ad agency Stagwell, released a mini-manifesto in which it praised AI-driven militarisation and said “some cultures have produced vital advantages” while other cultures “remain dysfunctional and regressive”, arguing that “we must resist the shallow temptation of a vacant and hollow pluralism.” (X/Palantir)

🔒 Sky News is launching a paywalled app specifically for defence and security reporting and content. The Sky News Defence app is part of a wider strategic pivot to focus less on live, breaking TV news. (Press Gazette)