 "A 3D-printed Facebook logo is seen in front of a displayed stock graph in this illustration")
A handful of marketers suspended advertising on Facebook Inc. as the company hustled to quell anxiety about its platform in the wake of revelations that an outside company improperly handled data on tens of millions of its users.
In recent days, Facebook executives have been reaching out to advertising trade bodies, marketers and major ad agencies such as WPP PLC, Dentsu Inc. and Omnicom Group Inc to tell them it is working to audit all apps on its platform and reassure its users that their personal data is being protected, according to people in the ad industry and at Facebook.
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