NEWARK, Del. (CBS)—Delmarva Power is warning its customers that scammers posing as third party suppliers are sending fake utility bills via email to some New Jersey and Delaware customers.

The fraudulent email contains a link that is suspected to infect the customer’s computer with a virus or malware.

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Delmarva Power is asking its customers to only pay utility bills through the company’s “My Account” tool on its website, or by sending a hard copy of the remittance portion of the invoice through the mail.

Customers are urged to not open any email asking that payment be made unless it’s sent directly by Delmarva Power or the customers’ third party energy supplier.

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Also, Delmarva Power advises customers to ask for official photo identification from any person who shows up at their door.

Employees from Delmarva Power will carry official company identification cards. If proper identification cannot be produced, customers should notify police.

If customers have any doubt about the validity of a person’s claim to represent Delmarva Power, they should call the company immediately at 1-800-375-7117.

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