Uber Technologies Inc. — which has signficant operations in Phoenix and Tempe — was subject to massive data breach in 2016 that compromised the information of 57 million customers. Uber also kept that hack secret after it paid hackers $100,000 to delete that data, according to a story first reported by Bloomberg. Uber has an operations center in Phoenix and tests self-driving cars in Tempe. Uber CEO Dara Khosrowshahi posted about the breach and why the company did not disclose the hack which…