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The Collaborative International Dictionary
Vulnerability

Vulnerability \Vul`ner*a*bil"i*ty\, n. The quality or state of being vulnerable; vulnerableness.

Douglas Harper's Etymology Dictionary
vulnerability

1767, noun from vulnerable (q.v.).

Wiktionary
vulnerability

n. 1 (context uncountable English) susceptibility to attack or injury; the state or condition of being weak or poorly defended. 2 (context countable English) a specific weakness in the protections or defences surrounding someone or something. 3 (context computing English) a weakness which allows an attacker to reduce a system's security

WordNet
vulnerability
  1. n. the state of being vulnerable or exposed; "his vulnerability to litigation"; "his exposure to ridicule" [syn: exposure]

  2. susceptibility to injury or attack [ant: invulnerability]

Wikipedia
Vulnerability (computing)

In computer security, a vulnerability is a weakness which allows an attacker to reduce a system's information assurance. Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. To exploit a vulnerability, an attacker must have at least one applicable tool or technique that can connect to a system weakness. In this frame, vulnerability is also known as the attack surface.

Vulnerability management is the cyclical practice of identifying, classifying, remediating, and mitigating vulnerabilities. This practice generally refers to software vulnerabilities in computing systems.

A security risk may be classified as a vulnerability. The use of vulnerability with the same meaning of risk can lead to confusion. The risk is tied to the potential of a significant loss. Then there are vulnerabilities without risk: for example when the affected asset has no value. A vulnerability with one or more known instances of working and fully implemented attacks is classified as an exploitable vulnerability — a vulnerability for which an exploit exists. The window of vulnerability is the time from when the security hole was introduced or manifested in deployed software, to when access was removed, a security fix was available/deployed, or the attacker was disabled—see zero-day attack.

Security bug ( security defect) is a narrower concept: there are vulnerabilities that are not related to software: hardware, site, personnel vulnerabilities are examples of vulnerabilities that are not software security bugs.

Constructs in programming languages that are difficult to use properly can be a large source of vulnerabilities.

Vulnerability

Vulnerability refers to the inability (of a system or a unit) to withstand the effects of a hostile environment. A window of vulnerability (WoV) is a time frame within which defensive measures are diminished, compromised or lacking.

Usage examples of "vulnerability".

After an hour of on-line searching for a technical vulnerability that would give him access to a main development server, he hit the jackpot.

Surely it was only the circumstances of their forced cohabitation, and her own vulnerability, which made him so appealing.

He was certain that the marauding army of Emich was aware of their vulnerability.

Did it truly make her more beautiful, she wondered, or was it only a device to attract attention, to signal her sexuality, to proclaim her femaleness, to announce her eagerness for, her readiness for, her vulnerability to, male aggression.

People said soft spot like it was a good thing, when what it really was was a vulnerability, like the fontanel of an infant, a place where grievous harm could occur.

Then each night, Newman, Weiskopf, Macklin, Coombs, McDade, Robertson, and Sergeant Major Gabbard worked late into the night, searching for vulnerabilities and ways to reduce them.

He had to admit that Layne Hamilton was indeed a woman of substance: a dangerous mixture of femininity, vulnerability and elegance nicely rolled into one very appealing package.

What was also becoming clear, by deduction and some hasty new experiments, was that banishment of leukocytes opened up a weakness, a vulnerability.

Properly detailed nodal analysis of this grid of knowledge and vulnerability will enable the shutting down of specific or all essential functions nearly simultaneously.

Despite its vulnerability and bad as sociations, Elysian had a comforting feel to it, a sense of home like none she had ever owned.

Lost in the unexpected warmth of the hug that Garth gave her as he opened the door, Claudia was too taken aback to do a thing other than simply let him hold her and be glad that he was doing so, be grateful to him not just for his human warmth but for his instinctive and correct reading of her mood, her fragility and uncertainty, her vulnerability.

The bare skull, gleaming waxily in the diffuse light of the waning day, seemed a constant reminder of his vulnerability.

Made sensitive to her own vulnerability, she was mindful that the three priests on the pyramid dais were affronted, but powerless to intervene.

Written in an easy-to-read, question-and-answer format, this authoritative reference provides the most up-to-date and reliable information on biological agents like anthrax and smallpox, the dangers posed by chemical weapons, and the vulnerabilities of our food and water supplies.

Jieret flared, as the bared vulnerability of that naked confidence backlashed against his sworn duty to Rathain.