Destroying Hardware
Destroying hardware should be done by using a combination of:
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Degaussing
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Burning
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Shredding
All three methods should be used because of the efficacy of using electron microscopy to read data from storage drives which have not been completely destroyed.
Drilling through the storage drive, a common hardware destruction method, is not considered to be secure.
In the best case scenario, the hardware should be melted in a foundry, as this makes it impossible to retrieve any data by any means.