A malicious e-mail targeted Hargray customers and overloaded the company's servers Wednesday, a company spokesman said.
The e-mail, purporting to be from Hargray management, sought customers' user names and passwords, company spokesman Andrew Rein said.
"We did experience some slowness with our e-mail server yesterday," Rein said Thursday. "That is now back in balance."
The company has warned customers not to disclose personal information in response to such requests.
Hargray plans to upgrade its server soon to better handle such attacks but has not set a date to do so, Rein said.