If you use Google Chrome, you may want to think twice about storing your credit card details on the browser.

A new malicious software called ‘Vega Stealer’ has been discovered that can steal any credit card details, passwords or files you have stored on either the Google Chrome or Mozilla Firefox browsers.

And Proofpoint , who spotted the malware, has warned that it is set to ‘evolve and grow’, targeting more and more users.

The Vega Stealer infects computers through phishing emails, and initially, it seems that advertising and marketing professionals have been targeted.

If you open the attachment, it takes you to a fairly innocent looking document - however, in the process you’ll also unwittingly download the Vega Stealer malware (
Image:
Proofpoint)

The phishing email tends to have a subject line such as ‘Online store developer required’, and contains a malicious attachment called ‘brief.doc.'

If you open the attachment, it takes you to a fairly innocent looking document - however, in the process you’ll also unwittingly download the Vega Stealer malware.

And once the malware has infected your computer, it can steal your auto-fill details stored on Google Chrome, as well as documents stored on your machine.

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Proofpoint said: “While Vega Stealer is not the most complex or stealthy malware in circulation today, it demonstrates the flexibility of malware, authors, and actors to achieve criminal objectives.

“Because the delivery mechanism is similar to more widely distributed and mature threats, Vega Stealer has the potential to evolve into a commonly found stealer.”

Make sure you're always wary about opening attachments in emails from unknown senders.