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Mobility holds the, ahem, key

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So, what drivers are most relevant when deciding where to place the emphasis when it comes to encryption? The answer is: "It's not as simple as that." When we compared these drivers against what organisations were actually up to with encryption, we didn't find any one making a particular difference. The smart people I work with suggested coming up with an index based on the number of respondents that scored 4 or 5 for each of the options shown in Figure 1 above, from which we ended up with a subset of 77 respondents, for whom all four areas were seen as a major driver – let's call this group the Focus group.

As you’d expect, the Focus group were more likely to feel the need for certain types of encryption, and indeed were more likely to have done something about it already. When we look at the ideal-world situation however, what this group gives us is a pretty stark view on how they believe things should be, particularly in the area of mobility (Figure 3).

Here's the thing: the chart shows us that the Focus group believes that all data stored on notebooks used by mobile workers should be encrypted – or at least 95 per cent of the group believes this to be true. A smaller but still significant proportion believes this is also the case for computers used in home locations, data on handheld devices, and indeed data stored on USB sticks.

Figure 4

Fundamentally, the Focus group makes a pretty solid case for encryption in the mobile context, based on the drivers involved. Of course not all organisations will be quite so affected by the drivers – but we know these are things that are of growing concern to most. The implication is that as organisations face up to the challenges, they should be encrypting data across the range of mobile devices.

Or at least it would be, if it were simple to do. Interestingly, when we asked about the challenges involved, it turned out that cost was not the number one factor. This stands to reason given the increasing availability of low-cost encryption tools, including those built into operating systems. No, the number one reason according to respondents, involves practicalities around implementation – which are particularly challenging when it comes to mobile data (Figure 5). As we can see, this even trumps the key management issues that we are so often told pose a challenge.

Figure 5

So we have a dilemma. The Focus group recognise that mobile encryption should be switched on by default, and many organisations will reach the point where they too face the same drivers, to the same level. Right now, however, we are told that encryption remains too difficult to deploy, despite the availability of low-cost or bundled options.

The message to vendors is that they need to get their act together when it comes to simplifying encryption across the board – remember, we're learning from a self-selecting sample of IT pros with an interest in security here, and not a bunch of random people from the street who might not have the technical smarts.

Meanwhile, the message to end-users is, if you haven't already encrypted your laptop data, you'd best get on with it - or at least ask your IT department how to do it. ®

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