Consumers In The Cloud: Businesses Beware

Companies should take a hard look at what cloud services their employees are using following last weeks authentication bug at Dropbox.

For four hours last week, a flawed authentication update allowed anyone the ability to access the data of any user of the cloud storage service Dropbox.
The error could have caused a massive privacy breach. As it turned out, the company was notified and fixed the error before widespread knowledge allowed the vulnerability to be exploited by malicious actors.
According to our records, there were fewer than a hundred affected users, and neither account settings nor files were modified in any of these accounts, the company wrote in a
blog post last Friday
. At this point, we have contacted all these users and provided them more detail.
Security experts point to the incident as a reminder that the consumer cloud can still cause problems for businesses. While Dropbox is aimed at individuals, the company has not made a secret of its business aspirations: Last year, it
surveyed users
about how they use the service to help their businesses. Articles on the benefits of cloud storage services, such as Dropbox and iCloud, are widespread on the Web.
Consumers are increasingly bringing their personal technology into the workplace, much to the chagrin of CSOs. With cloud services such as Dropbox, companies need to make sure that sensitive corporate data is not being posted to the cloud.
Dropbox encrypts data on the servers, but not to individual accounts, notes Sorin Mustaca, a product manager with security firm Avira. Anyone with admin access to the server can read all of its data. In addition, data on the servers of external services have lesser legal protections, Mustaca says.
I always advise our users to be very, very careful what they put online because if they put anything online, then the data does not belong to them anymore--it belongs to the cloud, Mustaca says. This is the most important lesson that needs to be learned by anybody. If you put it online, you lose control of the data.
Cloud services should allow users to encrypt their information, thus making mass breaches much more difficult, if not impossible. A week ago, Dropbox users started
calling for better encryption
, but it isnt clear yet whether the service provider will offer that feature. Dropbox prides itself on its ease of use--adding individual passwords would make the service more difficult to use and more costly, says Puneesh Chaudhry, co-founder and CEO of data management start-up Copiun.
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Security monitoring, incident response, and forensics are essential, even in the cloud. But the cloud by definition implies relinquishing at least some control, which can make these practices problematic. In this report, we identify the challenges of detecting and responding to security issues in the cloud and discuss the most effective ways to address them.
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Consumers In The Cloud: Businesses Beware