The world's biggest computer chip maker, Intel, has agreed to buy the security technology firm, McAfee.
Intel will pay about $7.68bn (£5bn) in cash.
Under the terms of the deal, Intel said it would pay $48 per share in cash for McAfee, almost 60% higher than its closing price on Wednesday.
Intel said the deal, which is intended to increase its security services, would slightly reduce net earnings in the first year.
The president and chief executive of Intel, Paul Otellini, said in the past, energy efficiency and connectivity had defined computing requirements, but security was becoming as important.
Mr Otellini said security would become a "third pillar" that people demanded. BBC News - Intel in $7.68bn McAfee takeover