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Symantec [SYMC] on Sunday night said it has agreed to acquire web security firm Blue Coat, Inc. for $4.7 billion in cash, giving it greater scale and a more comprehensive suite of cyber security solutions.The deal has already been approved by both companies’ boards of directors and is expected to close in the third quarter. Once the transaction is complete, Symantec will have annual sales of $4.4 billion and add capabilities in protecting against cyber threats to the Web, networks…
