Verizon users are wondering if they are part of the data leak that the company announced affects some six million customers on Wednesday.
Verizon confirmed that the data leak was a result of human error.
The error made customer phone numbers, names, and some PIN codes publicly available online. PIN codes are used to confirm the identity of people who call for customer service.
The situation was discovered by UpGuard, the same company that discovered leaked voter data in June and said that the error could eventually impact up to 14 million accounts.
UpGuard alerted Verizon to the leak on June 13. The security hole was closed on June 22.