According to a source with AllThingsD, the lawyers at Microsoft Corporation (NASDAQ:MSFT) and Facebook are duking it out over the hiring of Carolyn Everson. Everson was the global ad sales head and was hired as the VP of global sales at Facebook. Microsoft is considering blocking Everson from using any strategic information she learned while at Microsoft or from contact certain ad client companies on behalf of Facebook.
Microsoft CEO Steve Ballmer is rumored to be behind the push for the legal blocks. Microsoft is a strong partner and a large investor in Facebook. Facebook did not notify Microsoft CEO Steve Ballmer about the hiring beforehand as a warning either. Everson is replacing Mike Murphy and will be reporting to VP of Advertising and Global Operations David Fischer.