Google may soon be the target of a third set of charges from Europe's top antitrust authority, this time concerning the advertising services that generate the majority of its revenue.Digital download: Profiles of all 100 Best Places to Work in IT 2016A compact list of the 50 large, 21 midsize and 29 small organizations that ranked as Computerworld'sREAD NOWThe European Commission has asked companies that submitted evidence to its antitrust investigation to remove confidential material from their documents, a step that often precedes the filing of formal charges,Politico.eu and Bloomberg reported Monday.The Commission has already filed two previous sets of antitrust charges against Google. The most recent, concerning the company's tying of its online services and apps to use of the Android operating system, were filed two months ago, following a relatively brief investigation begun in April 2015.

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