Half of the firms are concerned about the security of Web 2.0 tools including social media, says McAfee.

According to the security firm's 'Web 2.0: A Complex Balancing Act – The First Global Study on Web 2.0 Usage, Risks and Best Practices' report, 60 percent of businesses are worried about the effect social media will have on their reputation, while eight percent said employees disclosing confidential or sensitive information on social media sites had lead to litigation or legal threats.

Nearly a quarter (13 percent) of firm said they block use of all Web 2.0 tools in the workplace, while 81 percent admitted to restricting use of at least one social media service. Furthermore, a third of organisations believe security fears are the reason web 2.0 tools are not more widely used.

McAfee also revealed one third of firms do not have a policy on social media use in place reported that they do not have any social media policy in place, although a quarter said they do monitor how staff use social media.

However, of those that firms that have adopted Web 2.0 technologies, three quarters reported new revenue streams and 40 percent admitted the tools have boosted productivity and enhanced effective marketing strategies.

The security firm said adoption of Web 2.0 technologies was most prevalent in Brazil, Spain and India, while the US, UK and Canada were named the countries where web 2.0 adoption is trailing.

"Web 2.0 technologies are impacting all aspects of the way businesses work," said George Kurtz, chief technology officer for McAfee.

"As web 2.0 technologies gain popularity, organisations are faced with a choice – they can allow them to propagate unchecked, they can block them, or they can embrace them and the benefits they provide while managing them in a secure way."

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