Last year, Norway’s privacy watchdog hit Meta Platforms Inc. with a ban related to their processing of user data. It was a risky move for a small office to make, but it paid off several months later when European Union regulators extended the curbs across the region. It also burnished the reputation for the agency’s new boss — one of the most recent additions to Europe’s growing roster of female data regulators out to rein in big tech.Line Coll, a former tech lawyer, stepped into her role in 202...