Telstra has been spoofed in a new email scam doing the rounds. (Source: Getty, MailGuard)

Customers of Telstra have been warned against an email urging them to update their payment information that is actually designed to steal banking and personal details.

MailGuard has said Telstra’s 18.8 million customers are at risk from the phishing scam, which tells recipients that their “last payment was declined”.

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“Our payment system has detected an invalid billing associated with your account,” the email reads.

“Your service now is scheduled for automatic termination. Please update your payment information today to avoid service interruption.”

Here's what the latest email scam spoofing Telstra looks like. (Source: MailGuard)

Here’s what the latest email scam spoofing Telstra looks like. (Source: MailGuard)

But Aussies shouldn’t fall for it – exploiting Telstra’s recognisable logo, the email is designed to seem urgent to trick unsuspecting recipients into submitting their personal information.

Clicking the blue ‘Check Information’ button will take them to a fake sign in page that requests Telstra customers’ IDs and passwords.

After keying in their details, the subsequent page asks for credit card details, and upon confirming they are asked for SMS verification and then directed to the real Telstra homepage.

Screenshot of Telstra spoofing scam 'credit card details' page

Here’s what the fake ‘Telstra’ phishing scam looks like. (Source: MailGuard)

Screenshot of 'one-time SMS code' page of Telstra spoofing scam

Here’s what the fake ‘Telstra’ phishing scam looks like. (Source: MailGuard)

But the phishing attempt is just designed to harvest users’ credit card…

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