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All of our redundant PCs are overwritten before recycling. Isnt that enough?

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All of our redundant PCs are overwritten before recycling. Isnt that enough?

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Overwriting to a recognised standard of security takes hours per drive (approx. 12 hours for a 160Gb drive based on our experiments). This is simply too time-consuming and expensive for a physical device that might have a residual value of 10 or less. The jury is out on the effectiveness of overwriting. One massive flaw in this technique is that data residing in bad sectors is skipped. The amount of bad sectors in an average hard drive can be quite considerable. Another critical and commonly overlooked point is that non-functional hard drives cannot be overwritten.

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