CNN Money reports that Verizon confirmed Wednesday that personal data of 6 million customers has leaked online.
"The security issue, uncovered by research from cybersecurity firm UpGuard, was caused by a misconfigured security setting on a cloud server due to "human error,'" CNN Money reports.
The report says the error made customer phone numbers, names, and some PIN codes publicly available online.
No loss or theft of customer information was reported.
CNN Money reports Verizon was alerted of the data leak on June 13 and the security hole was closed June 22.
Verizon customers are advised to update their PIN codes and not use the same one twice.