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Source: linuxlinks

The importance of security should never be underestimated. The consequences of losing data can be disastrous for any organisation. For example, the loss of a single unencrypted laptop may have huge repercussions. This could include breaching data protection legislation with the risk of a significant fine, a loss in the confidence of an organisation, as well as the risk that sensitive data may fall into the hands of a competitor or third party with malicious intent.

Disk encryption is one method to help minimise the risks by preventing unauthorised access to data storage, to ensure safe information exchanges, safeguard against data leakage, and manage compliance. This form of security is useful for any computer that holds personal information, not only laptops. Disk encryption uses disk encryption software to encrypt the entire hard disk. The onus is therefore not on the user to determine what data should be encrypted, or to remember to manually encrypt files. By encrypting the entire disk, temporary files, which may reveal important confidential data, are also protected. Security is enhanced further when disk encryption is combined with filesystem-level encryption.

So, let’s explore the 5 disk encryption tools at hand. For each application we have compiled its own portal page, a full description with an in-depth analysis of its features, screenshots, together with links to relevant resources and reviews.

loop-AES Encrypt disk partitions, removable media, swap space and other devices
dm-crypt Transparent disk encryption subsystem
cryptsetup Configures encrypted block devices
SD4L Hides complete file systems within encrypted regular files
TrueCrypt Used for on-the-fly encryption  ( Platform: Linux and Windows )

 

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