The FREE Cybersecurity Glossary by Thor Pedersen!

Dense-Wave Division Multiplexer (DWDM): An optical technology utilized in communications to multiply the number of wavelengths that can be sent over a single optical fiber, thereby increasing the overall data transmission capacity. DWDM systems have the potential to transmit up to 80 wavelengths on a single fiber, providing a high-bandwidth solution for networks and reducing the risk of data congestion and delay.

Deny List: A security measure that specifies certain entities — such as software applications, email addresses, users, or IP addresses — that are blocked or denied access to a system. It's a form of access control used to improve system security by explicitly refusing entry to potential threats and is the opposite of an allow list, which permits access only to entities that have been deemed safe.

Department of Commerce (DOC): A cabinet-level agency of the United States government focused on promoting economic growth. The DOC undertakes tasks like conducting the national census, issuing patents and trademarks, fostering international trade, and supporting business development, striving to create conditions for economic growth and opportunity in collaboration with businesses, universities, communities, and workers.

Department of Health and Human Services (DHHS): A federal agency in the United States that administers programs dealing with health, welfare, and health information. In terms of data protection and confidentiality, DHHS plays a pivotal role in enforcing the Health Insurance Portability and Accountability Act (HIPAA), which includes rules to protect the privacy and security of certain health information.

Deployment control: A critical phase in change management where changes are integrated into the live environment following rigorous testing and approval. This involves ensuring that changes are deployed accurately, efficiently, and safely and that they do not disrupt operations. Effective deployment control is essential to ensuring that vulnerabilities are not introduced during the deployment of changes and that the system remains secure and functional throughout the process.

Deployment Planning: A phase in change management that entails designing a detailed strategy for how changes will be executed in the live environment. This involves determining the sequence and timing of changes, identifying required resources, outlining contingency plans for possible failure, and assessing potential impact on users and operations. Effective deployment planning ensures that changes are implemented methodically, minimizing the risk of introducing vulnerabilities or disrupting system operations.