More than 80 per cent of all malicious code on the web can be found within online advertising, it has been revealed.
A study of UK web traffic by internet security firm Finjan has found that dubious code was just as likely to be found within mainstream advertising as it was in more disreputable content.
Advances in hacker techniques mean that such codes are increasingly unable to be detected by leading anti-virus products, Finjan suggest.
Chief technology officer at Finjan, Yuval Ben-Itzhak said, "The fact that malicious code is just as likely to be found in legitimate categories as in questionable categories means that security products that rely solely on URL categories to block access to malicious sites are no longer effective.”
The study also exploded common assumptions regarding the development of illegal hacks in eastern European or Asian countries.
Around 80 per cent of the malicious code was found to have originated in the US, with ten per cent from the UK.Canada, Germany and Italy also featured prominently on the list of countries in which hacks were created.
This week a separate security firm, Clearswift, advised that social media websites were being targeted by hackers injecting malicious code into web 2.0 technologies.
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