When for-profit companies offer a free app, there is always going to be strings attached. As we have increasingly seen, these strings are often tied to your privacy to enable said third party company to monetize you in some way, but in worse cases your security can be compromised leaving you open to identity theft at best or legal repercussions at worst. One of today's most ubiquitous apps is Dropbox, which operates as a file hosting service that uses "cloud computing" (aka the internet) to enable users to store and share files and folders with others using file synchronization. Sounds harmless enough until you start thinking about how they can do so much for free. Learn about the flaws discovered by security researchers that have caused Dropbox to significantly change their terms of service, and about a group building a free, open sourced option for anyone to use to share and protect their data with. Learn, get involved, help and CYA, because for-profit third party companies are not going to do it for you.