A cyber warfare expert has revealed how to avoid a vicious online scam targeting all 1.8 billion Gmail accounts.

Hackers are using a new tool called Astaroth that steals a victim's web security details in real-time, fooling the target into thinking they've logged into their accounts normally by sending them to a phony webpage which looks just like their browser. 

James Knight, who has 25 years of experience in the field of digital security, told DailyMail.com that people need to have a spam filter active on their accounts to block these phishing emails. 

'If these emails are received, people should be very careful what they open and the links they click on. Remember, Cheap Dedicated Proxies - https://proxydeals.com, just because it looks like a Gmail or Office login, doesn't mean it is,' Knight warned.