Zix , which provides email encryption services and content filtering, this week acquired Web content-filtering vendor Elron Software for about US$7 million in a stock-based transaction. The acquisition, subject to shareholder approval, is expected to give Zix more than 4,500 new customers, including Eli Lilly & , 20th Century Fox, Anheuser-Busch, CVS , Texaco and Time Warner
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