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Thomas Rid: Major cyber-attacks are 'quite rare'

In 2010, the threat of cyber-attacks was elevated to one of the top four risks to national security.

An extra £650m was allocated to bolster the government's activities as a result.

On Wednesday, cybersecurity experts will give evidence on the progress in internet safety to ensure businesses can conduct their affairs online safely.

The government launched its Cyber Security Strategy just over a year ago with the aim of making the UK one of the most secure places in the world to do business online.

Prof Thomas Rid from Kings College London told the Today programme: "Cyber-attacks are not created equal. Smaller attacks are easily defended against, but the big attacks that steal intellectual property and create multi-million pound damage are quite rare."

First broadcast on BBC Radio 4's Today programme on Wednesday, 13 March 2013.