(Reuters) - BlackBerry Ltd said on Monday that it was considering strategic alternatives, including a possible sale. Here is an overview of the assets of the one-time technology giant and some estimates on what they may be worth. SERVICES: BlackBerry's security-focused services business routes data through a network of servers across the globe, supporting a shrinking subscriber base of some 72 million users. It is arguably the most valuable of BlackBerry's assets. ...

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