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data exfiltration (data extrusion)

This definition is part of our Essential Guide: What data loss prevention systems and tactics can do now

Data exfiltration, also called data extrusion, is the unauthorized transfer of data from a computer.

Such a transfer may be manual and carried out by someone with physical access to a computer or it may be automated and carried out through malicious programming over a network.

To prevent data exfiltration, administrators should create strict IT controls for both physical and digital security. Such controls may include the use of data leak prevention (DLP) products to inspect and/or deny egress traffic from carrying unauthorized content beyond the perimeter of the enterprise and policies for role-based access control (RBAC), encryption, consumerization and password hardening.

See also: extrusion prevention, podslurping

This was last updated in April 2014

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