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Storing in the cloud securely: 30 services compared

Cloud storage services for personal and business use from the perspective of the CIO

Keeper of the keys

So if cloud storage services are an enabler in your business—either as a platform for the whole company or simply used piecemeal by some employees—then ideally you want to be able to manage the keys. This is usually known as private-key encryption, and is so secure that, for example, as stated by SpiderOak, if you lose the key, they can't help you. It's gone, there's no other way to decrypt it.

This also means, naturally, that should a service be compromised, or the provider receives a legal request, or an employee abuses access, or a third-party buys the company... or any of the things we can't think of—then your data won't be readable. Only you, or your employees, have the key.

Fortunately, a number of cloud storage services do provide private-key encryption. Determining these can be a little like sifting the wheat from the chaff, but beyond explicitly stating it on their web pages there are other tell-tale signs—for example, some services provide an extra layer of protection by scanning uploaded documents with a virus scanner like McAfee. Nice to have, but this could only be possible if the data you're uploading is readable, ergo not private-key encrypted.

See the embedded table for a breakdown of the services that provide private-key encryption. There are a lot of other features to look at too, which we'll get onto in a moment. Even if your business isn't currently looking to use an enterprise class cloud storage solution, with the consumerisation of the workplace where even the best network security doesn't mean much if you have employees uploading data to third-party cloud services from their smartphones over 3G, it helps to be able to set a policy detailing which services are 'safe' for employees to use.

 

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10 Comments

Martin

1

Love the content of the article but have two notes...

1. The table doesn't seem available to me. The embedded table link does not resolve (chrome on Mac). Is there a direct link available?

2. I appreciate the discussion of platform compatibility but I think you missed touching on one important element for my use case - cloud storage support for network storage units (backup especially). Of the services mentioned in the body of the article (remember - I can't access the table), I think only ElephantDrive and Mozy offer on-board NAS support. I know Egnyte does as well, but I didn't see them mentioned. In any event, we've find it very useful to have one solution that covers not only the workstations and laptops, but also the NAS.

CSO Publisher

Staff

2

Hi Martin

Please check again for comment #1 as we have tested our end and you should be able to see the table on page 4 fine now. Please let me know if you cant.

Sydney

3

For security, Gartner has started tracking a new category - cloud encryption gateways. Encrypts data before sent to the cloud and some can work with mobile apps. Encryption and keys stay behind the firewall. One to check out is CipherCloud.

Martin

4

@Anonymous - I'm not sure if it was on my end or your end (probably mine), but the table is rendering correctly for me now. I was able to view and to download.

Thanks for checking and apologies if I raised a false alarm.

Furniture Stores Brisbane

5

This is the only time I've been to your website. Thanks for explaining more details.

webman

6

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webman

7

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Stock Profits

9

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Terry

10

It is definitely a detailed comparison, really appreciate your time and effort. The only thing that disappoints me is that the list missed out SyncBlaze which we are currently using it in our organization and suits the needs of small and medium businesses. Thanks anyways.

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