BBC; Google searches web's dark side

BBC NEWS | Technology | Google searches web's dark side: "One in 10 web pages scrutinised by search giant Google contained malicious code that could infect a user's PC.

Researchers from the firm surveyed billions of sites, subjecting 4.5 million pages to 'in-depth analysis'.

About 450,000 were capable of launching so-called 'drive-by downloads', sites that install malicious code, such as spyware, without a user's knowledge."