1.      f. Psicol. Capacidad humana de asumir con flexibilidad situaciones límite y sobreponerse a ellas.

2.      f. Mec. Capacidad de un material elástico para absorber y almacenar energía de deformación.

DRAE. Diccionario de la Lengua Española.

Capacidad de los sistemas para seguir operando pese a estar sometidos a un ciberataque, aunque sea en un estado degradado o debilitado. Así mismo, incluye la capacidad de restaurar con presteza sus funciones esenciales después de un ataque.

Capacidad de adaptación de una organización en un entorno complejo y cambiante.[UNE Guía 73:2010]

(Diseño del Servicio) La habilidad de un Elemento de Configuración o Servicio de TI a resistir Fallos o de Recuperarse rápidamente tras un Fallo. Por ejemplo, un cable reforzado resistirá fallos cuando esté bajo estrés.

Ver Tolerancia a Fallos.

[ITIL:2007]

La capacidad de un sistema o red para recuperarse de forma automática de una interrupción, por lo general con un efecto reconocible mínimo. [COBIT:2006]

the ability of a substance to return to its original shape after it has been bent, stretched or pressed

Oxford Advanced Learner's Dictionary.

The ability of a system or network to resist failure or to recover quickly from any disruption, usually with minimal recognizable effect

ISACA, Cybersecurity Glossary, 2014

the ability of systems to operate while under attack, even in a degraded or debilitated state, and to rapidly recover operational capabilities for essential functions after a successful attack. The concept of information system resilience can also be applied to the other classes of threats, including threats from environmental disruptions and/or human errors of omission/commission. [CSS US:2012]

generally as the capacity of an information system or network to continue to operate despite incidents, or to carry on normal operations smoothly notwithstanding technical problems.

OECD, Cybersecurity Policy Making at a Turning Point, 2012

A computing infrastructure that provides continuous business operation (i.e., highly resistant to disruption and able to operate in a degraded mode if damaged), rapid recovery if failure does occur, and the ability to scale to meet rapid or unpredictable demands. [CNSSI_4009:2010]

adaptive capacity of an organization in a complex and changing environment [ISO Guide 73:2009]

ability to resist, absorb, recover from or successfully adapt to adversity or a change in conditions

Extended Definition:

1) ability of systems, infrastructures, government, business, and citizenry to resist, absorb recover from, or adapt to an adverse occurrence that may cause harm, destruction, or loss of national significance

2) capacity of an organization to recognize threats and hazards and make adjustments that will improve future protection efforts and risk reduction measures

Annotation: Resilience can be factored into vulnerability and consequence estimates when measuring risk.

DHS Risk Lexicon, September 2008

(Service Design) The ability of a Configuration Item or IT Service to resist Failure or to Recover quickly following a Failure. For example, an armoured cable will resist failure when put under stress.

See Fault Tolerance.

[ITIL:2007]

The ability of a system or network to recover automatically from any disruption, usually with minimal recognisable effect. [COBIT:2006]

The capability of an IT infrastructure, including physical, personnel, IT, and operational security controls, to maintain essential services and protect critical assets while preempting and repelling attacks and minimizing the extend of corruption and compromise.

Complete Guide to Security and Privacy Metrics, D.S. Herrmann, Auerbach Publications, 2007.

The ability of an organization to recover from a significant disruption and resume critical operations.

http://ithandbook.ffiec.gov/it-booklets/business-continuity-planning/appendix-b-glossary.aspx

Testing of an institution’s business continuity and disaster recovery resumption plans.

http://ithandbook.ffiec.gov/it-booklets/business-continuity-planning/appendix-b-glossary.aspx

capacité d'adaptation d'un organisme dans un environnement complexe et changeant [ISO Guide 73:2009]

(Conception de services) La capacité d’un élément de configuration ou d’un service des TI à résister à une panne ou à avoir une reprise rapide suite à une défaillance. Par exemple, un câble blindé résistera mieux à la défaillance lorsqu’il sera soumis à une tension.

Voir Tolérance de panne.

[ITIL:2007]