Browse Definitions :

Melbourne shuffle algorithm

The Melbourne shuffle algorithm is a sequence of actions intended to obscure the patterns by which cloud-based data is accessed. The goal is to make it difficult for unauthorized parties to draw conclusions about what type of data is being stored in the cloud by observing patterns that emerge as the data is accessed.

Even when data is encrypted, details about how often the data is accessed or what action is taken after the data has been accessed can be revealing. By analyzing digital footprints, an outsider can predict such things as who is likely to own a particular data set or what business announcement is likely to correlate with a particular access pattern.

As with a deck of cards, a data shuffle rearranges the array to achieve a random permutation of its elements. The Melbourne shuffle moves small amounts of data from the cloud server to the user's local memory, where it is rearranged before being returned to the server. Even when the same user repeatedly accesses the same data, shuffling ensures the access path will not be consistent.

The algorithm, which obfuscates access patterns by making them look quite random, was written by computer scientists at Brown University in 2014. It is named for another kind of shuffle -- a popular dance move in Australia during the 1990s.

This was last updated in August 2017

Continue Reading About Melbourne shuffle algorithm

  • pure risk

    Pure risk refers to risks that are beyond human control and result in a loss or no loss with no possibility of financial gain.

  • risk reporting

    Risk reporting is a method of identifying risks tied to or potentially impacting an organization's business processes.

  • risk avoidance

    Risk avoidance is the elimination of hazards, activities and exposures that can negatively affect an organization and its assets.

  • script kiddie

    Script kiddie is a derogative term that computer hackers coined to refer to immature, but often just as dangerous, exploiters of ...

  • cipher

    In cryptography, a cipher is an algorithm for encrypting and decrypting data.

  • What is risk analysis?

    Risk analysis is the process of identifying and analyzing potential issues that could negatively impact key business initiatives ...

  • What is risk mitigation?

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • fault-tolerant

    Fault-tolerant technology is a capability of a computer system, electronic system or network to deliver uninterrupted service, ...

  • synchronous replication

    Synchronous replication is the process of copying data over a storage area network, local area network or wide area network so ...

  • gigabyte (GB)

    A gigabyte (GB) -- pronounced with two hard Gs -- is a unit of data storage capacity that is roughly equivalent to 1 billion ...

  • MRAM (magnetoresistive random access memory)

    MRAM (magnetoresistive random access memory) is a method of storing data bits using magnetic states instead of the electrical ...

  • storage volume

    A storage volume is an identifiable unit of data storage. It can be a removable hard disk, but it does not have to be a unit that...