Customers of the Fifth Third Bank in America were the most at risk from phishing attacks in August, according to figures from antivirus firm McAfee. 

The top two institutions targeted in August accounted for a whopping 96.75 per cent of all phishing attacks.

Fifth Third Bank made up 60.47 per cent of the attacks, and 36.28 per cent were sent to customers of the Sun Trust Bank. 

Volks Bank was identified in 2.52 per cent of the internet scams and eBay featured in fourth place at0.34 per cent. 

Bank of America, Western Union, PayPal, Nationwide, Halifax and the Internal Revenue Service made up the top 10.

The most prevalent internet threat for August was the JS/Wonka Trojan, which downloads other pieces of malicious software onto the victim's PC.

Of the 761,559 PCs McAfee scanned in August, more than 42,000 were infected with JS/Wonka.