How well do you know your partner?
by Calum Macleod - European Director of Cyber-Ark Software - Tuesday, 7 June 2005.
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The environment for exchanging data should be a sterile environment - Encryption and other security mechanisms are not helpful if the security layers where the data is being stored can be circumvented. Encryption is good for confidentiality, but does not protect data from intentional deletion or accidental modifications. In order to build multi-layered security, a sterile environment must exist to accommodate and protect the security infrastructure. Creating such a sterile environment requires the creation of a single data access channel to the machine and ensuring that only a strict protocol, that prohibits code from entering, is available for remote users. Many file exchange technologies do not run in sterile environments. For example FTP Servers, a common method, are frequently nothing more than applications running on insecure platforms

Protect your data when it is at rest - The cornerstone of protecting storage while at rest is encryption. Encryption ensures that the data is not readable and thus maintains its confidentiality. But encryption that places high demands on managing is ineffective. A common approach for many organizations is to use a Public/Private key approach, but this is generally considered to be ineffective because of the enormous effort to maintain such a system. A Symmetric encryption model ensures a manageable and effective method to secure the data

Data must be protected from deletion and tampering - The protection of data by encryption is simply one part of the problem. Files may be accidentally or intentionally deleted or changed. Additionally you need to ensure that data cannot be tampered with.


Ensure that you are able to audit and monitor all activities – Comprehensive auditing and monitoring capabilities are essential for security for several reasons. First, it allows the enterprise to ensure that its policy is being carried out. Secondly, it provides the owner of the information with the ability to track the usage of its data. Thirdly, it is a major deterrent for potential abusers, knowing that tamper-proof auditing and monitoring can help in identification. Finally, it provides the security administrator with tools to examine the security infrastructure, verify its correct implementation and expose inadequate or unauthorized usage.

End-to-End network protection - Security must also be maintained while the data is being transported over the public network. The process of transferring data must be in itself secure, and there are several factors that influence the overall security of data transmission. As data transfer is an essential part of a larger business process, it is critical to be able to validate that this step in the process was executed correctly. This requires the solution to provide auditing features, data integrity verification and guaranteed delivery options. Transmitted data should be automatically digitally signed, thus ensuring the data delivery is complete and un-tampered.

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