Security experts warn of account risks after Verizon customer data leak. Thought your email, social media, and bank accounts were safe with two-factor authentication? Think again. The data was downloadable by anyone with the easy-to-guess web address. 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 by an employee of Nice Systems, a Ra'anana, Israel-based company.