Security researchers have found that a feature in the LinkedIn mobile app for iOS could be considered a security risk. Yair Amit and Adi Sharabani of Skycure Security found that, although it's an opt-in feature, it gathers and sends information back to LinkedIn when users access their calendar within the app. The insecurity is magnified by the data being transferred in plain text, including meeting details and other information that could be highly sensitive in nature.