Phone numbers and PINs were also exposed.
ZD Net explains:
An Israeli technology company has exposed millions of Verizon customer records, ZDNet has learned.
As many as 14 million records of subscribers who called the phone giant's customer services in the past six months were found on an unprotected Amazon S3 storage server controlled by an employee of Nice Systems, a Ra'anana, Israel-based company.
The data was downloadable by anyone with the easy-to-guess web address.
Nice, which counts 85 of the Fortune 100 as customers, plays in two main enterprise software markets: customer engagement and financial crime and compliance including tools that prevent fraud and money laundering. Nice's 2016 revenue was $1.01 billion, up from $926.9 million in the previous year. The financial services sector is Nice's biggest industry in terms of customers, with telecom companies such as Verizon a key vertical. The company has more than 25,000 customers in about 150 countries.