Secure tokens are used for authentication when accessing iCloud from other Apple apps (such as Mail and Calendar) and there is optional two-step verification (which can be turned on at ) via text message or device generated code for making changes to account information or signing into iCloud from a new device. Apple says it cannot access any of the core material that could be used to decrypt that key data and only trusted devices that you have approved can access your iCloud keychain. The iCloud keychain encryption keys, however, are created on your own devices and Apple can’t access them. The only thing that I can see where 256-bit is employed is for the iCloud keychain (used to store and transmit passwords and credit card data, also employing elliptic curve asymmetric cryptography and key wrapping which is good) so have to assume all other data is protected by weaker encryption which is not particularly encouraging. Rather than using AES-256 bit encryption everywhere, however, it uses “a minimum of 128-bit AES” which is considerably less secure. Well, Apple says that data is encrypted both in transit (using SSL) and at rest on the server.
In fact, Apple has a pretty good reputation when it comes to security across its devices, but how does that translate into cloud services? Dropbox makes it clear, however, that a small number of employees can access stored files if required to for legal reasons. Like most cloud services, Dropbox employees cannot view the content of the files you store but can access metadata if they need to in order to provide tech support for instance. Since then Dropbox has upped its game on the login front, with optional two-step verification (via text message or Time-Based One Time Password apps) adding an extra layer of security to user accounts.
Stored data was never at risk though, but it served as a wake up call as to how reputational damage can impact a cloud business. How secure are cloud storage sites? How secure is Dropbox?ĭropbox has survived security scares, and hardened its security posture accordinglyĭropbox dropped the ball back in 2012 as far as security was concerned when it admitted that a compromised password had been used to access an employee Dropbox account which gave access to a document containing some user email addresses which then got spammed.
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