BlackBerry reported that it lost $423 million in its fiscal fourth quarter, but its recently installed CEO John Chen said he was "pleased with our progress" in streamlining the company's assets.
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Introducing Windows 10 for phones
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Download: Windows 10 build 9926
The new BlackBerry 10 OS represents a new start for RIM - and for its users, as they're told by CEO Thorsten Heins that their current-generation BlackBerry 7 handsets cannot be upgraded to BB10.
Research finds that BlackBerry 7 is the most secure mobile OS, but researchers criticise Android's fragmentation as a security flaw, as well as its reliance on users understanding app permissions.