Uber’s Massive EU Fine Is a Warning Should New Privacy Deal Fall

Uber Technologies Inc.’s €290 million ($324 million) fine by a European data-privacy watchdog is a warning for other US companies that transfer personal data from the EU to servers in the US, amid fluctuating data management pacts between the two regions.

The Dutch Data Protection Authority fined the rideshare giant last month following complaints by more than 170 French drivers that the company transferred their location data and other sensitive information to US servers without proper safeguards. Uber’s actions constitute a “serious violation” of the European Union’s landmark General Data Protection Regulation, it said.

The transfers occurred after the EU ...