Former US Secretary of State Condoleezza Rice joined Dropbox's board in April 2014. The appointment triggered the 'Drop Dropbox' campaign over her association with warrantless-surveillance policy during the Bush administration — a flashpoint that crystallized privacy-minded users' distrust of how Dropbox handles their data and who governs the company.
Source: The Guardian — 'Drop Dropbox: Condoleezza Rice appointment sparks user backlash'