Blackberry caught in the crossfire ... BB shares drop dramatically. http://www.reuters.com/article/2014/07/16/us-blackberry-stocks-idUSKBN0FL1MZ20140716 IBM said late Tuesday the tie-up will offer services geared toward security and mobile device management, an area viewed as BlackBerry's strong suit and a key selling point in its battle to win back market share from the iPhone and devices powered by Google Inc's (GOOG.O) Android software.