The security of Dropbox has been criticized by some people including NSA whistleblower Edward Snowden:
Source: http://www.pcworld.com/article/2455215/edward-snowden-dropbox-is-hostile-to-privacy.html
In a recent interview with The Guardian, Snowden called Dropbox a "targeted, wannabe PRISM partner" that is "very hostile to privacy."
Snowden also isn't happy about Dropbox's decision in April to add former U.S. Secretary of State Condoleeza Rice to its Board of Directors. Snowden called Rice "probably the most anti-privacy official you can imagine."
Snowden said Rice was one of several people overseeing the Stellar Wind program. Stellar Wind allowed the NSA to collect some U.S. email records and Internet use for nearly 10 years following the September 11 terrorist attacks. Rice was also a proponent of warrantless wiretapping, a fact which helped inspire a grassroots campaign calling on people to "Drop Dropbox" unless the company removed Rice from its board. Dropbox CEO Drew Houston publicly supported Rice's appointment to the board in an open letter published shortly after the Drop Dropbox campaign began.
Source: http://www.pcworld.com/article/2455215/edward-snowden-dropbox-is-hostile-to-privacy.html
