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By Jim Finkle LAS VEGAS (Reuters) – Apple Inc said it plans to offer rewards of up to $200,000 (£152,433) to researchers who find critical security bugs in its products, joining dozens of firms that already offer payments for help uncovering flaws in their products. The maker of iPhones and iPads provided Reuters with details of the plan, which includes some of the biggest bounties offered to date, ahead of unveiling it on Thursday afternoon at the Black Hat cyber security conference in Las Vegas. The program will initially be limited to about two dozen researchers who Apple will invite to help identify hard-to-uncover security bugs in five specific categories.

By Joseph Menn LAS VEGAS (Reuters) – Google Inc and Samsung Electronics Co will release monthly security fixes for Android phones, a growing target for hackers, after the disclosure of a bug designed to attack the world's most popular mobile operating system. The change came after security researcher Joshua Drake unveiled what he called Stagefright, hacking software that allows attackers to send a special multimedia message to an Android phone and access sensitive content even if the message is unopened. “We've realized we need to move faster,” Android security chief Adrian Ludwig said at this week's annual Black Hat security conference in Las Vegas.

(Reuters) – Canadian smartphone maker BlackBerry Ltd is cutting jobs across the world, the company said on Friday, as it consolidates its software, hardware and applications business. BlackBerry, which reported a 16.8 percent fall in quarterly revenue in March, had about 6,225 full-time employees as of Feb. 2015, according to its website. The company is reallocating resources to capitalize on growth opportunities and achieve profitability across all its business segments, a company spokeswoman said in an e-mailed statement.

By Euan Rocha and Alastair Sharp TORONTO (Reuters) – BlackBerry Ltd posted a surprise quarterly profit on Friday and said it is pushing to end a slide in its revenue in this fiscal year, sending the stock up as much as 5.1 percent. We're now turning our attention to revenue stabilization,” BlackBerry Chief Executive John Chen said on a conference call. Chen plans to grow BlackBerry's small but high-margin software division by moving more customers onto its products, including a system that allows companies and government agencies to manage multiple employee devices. The stock rose as high as $9.77, before easing to $9.59, up 3.1 percent on the Nasdaq, despite a much bigger-than-expected decline in fiscal fourth quarter revenue.

WASHINGTON/SAN FRANCISCO (Reuters) – AT&T Inc spent close to half the total in the record-setting U.S. sale of airwaves for mobile data, with Dish Network Corp spending heavily to manage a surprise win at No.2 ahead of Verizon, results showed on Friday. AT&T bid a total of $18.2 billion to win licenses of so-called AWS-3 spectrum. Dish itself did not win any licenses, but had invested in bidding partners SNR Wireless LicenseCo LLC and Northstar Wireless LLC, which bid a total of $13.3 billion. The two companies, backed also by financial firms including BlackRock Inc but with little to no revenue, had applied to receive a discount as small-business entities, bringing their net bid amount to $10 billion.

By Jennifer Ablan and Liana B. Baker NEW YORK (Reuters) – Samsung Electronics recently offered to buy BlackBerry Ltd for as much as $7.5 billion, seeking its valuable patents as it battles Apple in the corporate market, according to a person familiar with the matter and documents seen by Reuters. South Korea's Samsung proposed an initial price range of $13.35 to $15.49 per share, representing a premium of 38 percent to 60 percent over BlackBerry's current trading price, the source said on Wednesday. …