Experts from MI5, the police, government communications body GCHQ and the business world will join forces to share information on cyber threats.
The aim of the new initiative, which will include a secure web portal allowing access to shared data in real time, is to better co-ordinate reactions to the threats.
The project, dubbed the Cyber Security Information Sharing Partnership, follows last year's pilot scheme, in which 160 firms from the finance, energy, telecommunications, pharmaceuticals and defence sectors, were asked to share information.
Big screens at a new London headquarters, where a dozen analysts will be based, will monitor attacks and give details as to who is the target.
The kind of information shared includes technical details of an attack, methods used in planning it and how to mitigate and deal with one.
At a new London base, large screens will monitor attacks and provide details in real-time of who is being targeted.
Cabinet Office minister Francis Maude said: "We know cyber attacks are happening on an industrial scale and businesses are by far the biggest victims in terms of industrial espionage and intellectual property theft, with losses to the UK economy running into the billions of pounds annually.
"This innovative partnership is breaking new ground through a truly collaborative partnership for sharing information on threats and to protect UK interests in cyberspace."
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