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Keeping one step ahead of the cyber criminals

One of the biggest issues facing companies globally is security - not of their physical assets, but of their computer networks and data centres.

Hacking has been "industrialised", says security expert Tom McDonough, with criminals even selling hacking kits - with a promise of refunds if they do not work.

So how do you protect yourself against cyber attacks? Mr McDonough, president of Nasdaq-listed Sourcefire, a cyber security intelligence company, shares his thoughts.