Defamation cases are on the rise as social media has given more people a platform to 'publish' actionable content.

UnitedHealth Group has retained Clare Locke, a top defamation law firm, to battle what it describes as false and inaccurate social media allegations against its practices.

UnitedHealth, the healthcare insurance giant in the spotlight after its CEO was assassinated in broad daylight, has hired a law firm specializing in defamation to monitor reportage and social media postings about it.