SSL/TSL creates a secure tunnel protected by 128-bit or higher Advanced Encryption Standard (AES) encryption.Dropbox uses Secure Sockets Layer (SSL)/Transport Layer Security (TLS) to protect data in transit between Dropbox apps and our servers.Dropbox files at rest are encrypted using 256-bit Advanced Encryption Standard (AES).Not using Dropbox yet? See how Dropbox cloud security keeps you safe.

In addition, we employ a number of physical and logical security measures to protect user information from unauthorized access. We have strict policy and technical access controls that prohibit employee access except in these rare circumstances. But that's the rare exception, not the rule. Like most online services, we have a small number of employees who must be able to access user data for the reasons stated in our privacy policy (e.g., when legally required to do so). Other Dropbox users can't see your files in Dropbox unless you share links to files or share folders. You can also take advantage of two-step verification, a login authentication feature which you can enable to add another layer of security to your account. We have a dedicated security team using the best tools and engineering practices available to build and maintain Dropbox, and you can rest assured that we've implemented multiple levels of security to protect and back up your files. At Dropbox, the security of your data is our highest priority.

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