Cloud software maker VMware Inc said it would buy privately held mobile security company AirWatch for $1.54 billion to tap into rising demand from companies to secure the smartphones and tablets used by employees. While some analysts view the deal as a threat to BlackBerry Ltd, which has long been the go-to for companies looking for security products, others say the deal could spur more acquisitions in the mobile security market. VMware itself has entered this market recently. Its main business is making virtualization software, which creates a virtual machine that acts like a real computer.



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