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.
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Hargray plans to upgrade its server soon to better handle such attacks but has not set a date to do so, Rein said.