n. ~ The ability of a system to continue operations or to recover from faults or unusual circumstances.
In information security, resilience focuses on the ability to continue operations – even if with degraded performance – in the event of attack. In responsive web design, resilience emphasizes the ability to display content effectively, independent of display size (from phone to desktop monitor) or media (screen, print, audio reader).
- Wikipedia (†387 s.v. resilience): Resilience can broadly be defined as "the ability [of a system] to cope with change".[Weiland & Wallenburg, 2013]
- Wikipedia (†387 s.v. resilience (network)): In computer networking: “Resiliency is the ability to provide and maintain an acceptable level of service in the face of faults and challenges to normal operation.” Threats and challenges for services can range from simple misconfiguration over large scale natural disasters to targeted attacks. As such, network resilience touches a very wide range of topics. In order to increase the resilience of a given communication network, the probable challenges and risks have to be identified and appropriate resilience metrics have to be defined for the service to be protected.
- ISACA Glossary (†743 s.v. resilience): The ability of a system or network to resist failure or to recover quickly from any disruption, usually with minimal recognizable effect. (†1798)
- NIST 2013 (†734 p. B-11): Information System Resilience - The ability of an information system to continue to: (i) operate under adverse conditions or stress, even if in a degraded or debilitated state, while maintaining essential operational capabilities; and (ii) recover to an effective operational posture in a time frame consistent with mission needs. (†1822)
- NIST 2013 (†734 p.B-11): Information System Resilience - The ability of an information system to continue to: (i) operate under adverse conditions or stress, even if in a degraded or debilitated state, while maintaining essential operational capabilities; and (ii) recover to an effective operational posture in a time frame consistent with mission needs. (†1836)
- Zavidniak et al. 1999 (†402 1): Information resiliency refers to the continuous availability of uncorrupted mission-critical information to support business or military operations, even under the threat of a cyber attack. An information resilient enterprise will continue to engage in its critical operations, despite the attacker’s attempts to intrude, corrupt or deny service. The manner and efficiency with which the operations are conducted may change somewhat, but they remain operative. The commercial world needs information resiliency to maintain its computing operations in order to prevent financial losses, while the military needs it to prevent casualties and tactical losses. In addition, information resiliency is needed to ensure that a country’s critical infrastructure (e.g. transportation, financial industry, electrical power) continues to operate during hostile attacks against their computing and communications systems. (†450)