Dropbox is a free cloud storage service for sharing and storing files including photos, documents and videos. To use Dropbox you need to create an account on dropbox.com and allow the service to create folders on all your connected devices -- such as PCs, laptops or other mobile devices -- and synchronize any files you store on Dropbox with the connected devices. Files can be shared with others by providing them with a link to your Dropbox folder.
Dropbox came under fire in July 2012 when the company announced that some users received spam on email accounts that were linked solely to Dropbox accounts. As reported on Datamation, an investigation revealed that passwords stolen from other websites were used to gain access to a small number of Dropbox accounts, but the breach encouraged Dropbox to institute new procedures to improve the cloud storage platform's security.
Dropbox was launched in 2007 by Drew Houston and Arash Ferdowsi. Today, the service claims to have more than 50 million users. Dropbox offers free storage accounts (2GB storage space) and paid accounts for options between 50GB and 100GB of storage.