Security Glossary - D

This glossary has been created to assist security professionals in defining security terms commonly used by the profession and the industry, worldwide. It is a developing list that will be maintained, and where appropriate, modified, and changed over time. Terms borrowed from related fields, such as engineering, investigations, safety, etc. will be included when deemed necessary for the security professional.

REFERENCE NOTE

The definition's source is cited in brackets [ ] following the definition. View the key to all cited reference sources.

It is NOT our goal to publish this glossary in print since it is intended to be a current online reference (on the ASIS website) to serve the security professional on an ongoing basis.

 
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Definition
damage assessment

 

​The process used to appraise or determine the number of injuries and human loss, damage to public and private property, and the status of key facilities and services resulting from a natural or human-caused disaster or emergency.
[ASIS GDL BC 01 2005]

 

damaging potential

​Harmful potential of an event, whether anticipated or unanticipated, that would impact on the ability of the organization to function effectively, cause critical harm to infrastructure, result in significant human or property losses to the organization or its stakeholders, or cause adverse effects to the reputation or integrity of the organization.
[ASIS SPC.1-2009]

DD Form 214

​DD Form 214, Certificate of Release or Discharge from Active Duty.  The term "DD-214" is often used generically to mean "separation papers" or "discharge papers." The DD Form 214 documents the primary occupational specialties, decorations, education, and the characterization of service.  The DD Form 214 was issued to separate service members beginning in the 1950's.  Prior to that time, a variety of service specific forms were issued to separating service members.
[ASIS GDL PBS-2009]

decision-maker

​A person who decides things, especially at a high level in an organization.
Note: The decision-maker rather than a member of the investigative team is responsible for making decisions regarding discipline and corrective action.
[ANSI/ASIS INV.1-2015]

decision-making

​The process of evaluating and judging information gathered and relating it to the specific requirements of the position for which the applicant is applying.
[ASIS GDL PBS-2009]

denial

(1) - ​The process of evaluating and judging information gathered and relating it to the specific requirements of the position for which the applicant is applying.
[ASIS GDL PBS-2009]
(2) - Frustration of an adversary’s attempt to engage in behavior that would constitute an incident.
[ANSI/ASIS PAP.1-2012]

denial of service / distributed denial of service (DoS / DdoS)

​Internet-based attacks aimed at sending thousands of network packets to an organization’s routers and servers for the express purpose of either shutting down those devices or preventing the flow of normal business traffic.
[ASIS GDL TASR 04 2008]

derivative source

​Anything that specifies the origin of a fact or piece of information but is dependent on some other authority for the information included therein. 
[ASIS GDL PBSS-2015]​

detection

​The act of discovering an attempt (successful or unsuccessful) to breach a secured perimeter (such as scaling a fence, opening a locked window, or entering an area without authorization).
[ASIS GDL FPSM-2009]  [ANSI/ASIS PAP.1-2012]

direct evidence

​Evidence which proves a material fact.
[ANSI/ASIS INV.1-2015]

disaster

​(1) - An event that causes great damage or loss
[ASIS SPC.1-2009]
(2) - An unanticipated incident or event, including natural catastrophes, technological accidents, or human-caused events, causing widespread destruction, loss, or distress to an organization that may result in significant property damage, multiple injuries, or deaths.
[ASIS GDL BC 01 2005]

disaster recovery

​Immediate intervention taken by an organization to minimize further losses brought on by a disaster and to begin the process of recovery, including activities and programs designed to restore critical business functions and return the organization to an acceptable condition.
[ASIS GDL BC 01 2005]

discovery

​The legal process of obtaining information and/or evidence from a legal opponent.
[ANSI/ASIS INV.1-2015]

disruption

(1) - An event that interrupts normal business, functions, operations, or processes, whether anticipated (e.g., hurricane, political unrest) or unanticipated (e.g., a blackout, terror attack, technology failure, or earthquake). Note: A disruption can be caused by either positive or negative factors that will disrupt normal functions, operations, or processes. 
[ASIS SPC.1-2009]
(2) - An intentional, unintentional, or natural event that interrupts normal business, functions, operations, or processes, whether anticipated or unanticipated.
Note: A disruption can be caused by either positive or negative factors that will disrupt normal functions, operations, or processes.
[ANSI/ASIS PAP.1-2012]

disruptive event

​An event that interrupts planned activities, operations, or functions, whether anticipated or unanticipated.
[ANSI/ASIS PSC.1-2012] [ANSI/ASIS/RIMS RA.1-2015]

document

(1) ​Information and supporting medium.
Note: The medium can be paper, magnetic, electronic or optical computer disc, photography or master sample, or a combination thereof.
[ASIS SPC.1-2009]  [ANSI/ASIS PAP.1-2012]  [ANSI/ASIS PSC.1-2012]

(2) Information and supporting medium in any format.
[ANSI/ASIS/RIMS RA.1-2015]

downtime

​Period of time when something is not in operation.
Note: The allowable period of downtime is determined by the organizations obligations (e.g., customer and regulatory requirements).
[ASIS/BSI BCM.01-2010]

due diligence

(1) The attention and care that a reasonable person exercises under the circumstances to avoid foreseeable harm to other persons or their property. Failure to make this effort may be considered negligence.
[ASIS GDL PBS-2009]
(2) The care that a prudent person might be expected to exercise in the examination and evaluation of risks.
[ANSI/ASIS PAP.1-2012]

due process

​A fundamental guarantee that all legal proceedings will be fair and that one will be given notice of the proceedings and an opportunity to be heard before the government acts to take away one's life, liberty, or property.
[ANSI/ASIS INV.1-2015]

duress alarm

​A device that enables a person placed under duress to call for help without arousing suspicion.
[ASIS GDL TASR 04 2008]