Browse Definitions :
Definition

file shredder

A file shredder, also known as a virtual or digital shredder, is a program designed to render computer-based files unreadable, just as a conventional shredder makes physical documents unreadable.

In most operating systems, when a user deletes a file, it still exists on the hard drive but is made inaccessible through normal means. What’s actually deleted is the operating system’s pointer to the file, so it’s invisible to the user but still exists in storage. The storage space for the file is considered available and that may cause the data to be overwritten, although it is not possible to know that it has been.

It may be possible to recover the original data unless overwriting has taken place hundreds of times. Deleted files can be recovered through readily available freeware programs such as Recuva and Puran File Recovery as well as professional software such as EnCase that data recovery and law enforcement officials use.

File shredders are similar to hard drive overwriters except that they work with individual files, rather than effectively obliterating the entire drive. The programs overwrite the content in a file multiple times with zeroes, ones and random bits to ensure that the data is unrecoverable other than through extraordinary efforts.

If it’s crucial that data is obliterated, the only way to be sure it can’t be accessed is to physically destroy the device. The most effective way to ensure complete data destruction is to pulverize the assembly, in much the same way as a wood chipper disposes of tree limbs and brush. At a minimum, hard drive shredding involves severing every track on every platter in a drive. Hard drive shredding products and services exist for this purpose.

In the enterprise, ensuring that the sensitive information in deleted files cannot be recovered is essential to information security, compliance and data governance.  

This was last updated in September 2015

Continue Reading About file shredder

SearchCompliance

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

SearchSecurity

  • denial-of-service attack

    A denial-of-service (DoS) attack is a security event that occurs when an attacker makes it impossible for legitimate users to ...

  • information security (infosec)

    Information security, often shortened to infosec, is the practice, policies and principles to protect data and other kinds of ...

  • user authentication

    User authentication verifies the identity of a user attempting to gain access to a network or computing resource by authorizing a...

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

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

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

Close