A cyberattack on an online customer portal exposed limited account information of hundreds of thousands of customers. The incident involved an unauthorized third party gaining access to the portal. Approximately 400,000 customer accounts were impacted, with 300,000 of those belonging to Georgia Power customers. The remaining accounts are tied to the company's parent, Southern Company.

The company detected suspicious activity and determined that certain customer account information was accessed. Details of the exposed information are not specified.

Further information about the incident can be found in a statement from the company, which recently disclosed the cyberattack and its impact on customer accounts.