The FREE Cybersecurity Glossary by Thor Pedersen!

Multipurpose Internet Mail Extension (MIME): An internet standard that extends the format of email to support text in character sets other than ASCII, as well as attachments such as multimedia files. It's used to encode non-text content, enabling emails to carry audio, video, images, and application programs, thereby enhancing the scope of traditional email communication.

Multipurpose Internet Mail Extensions (MIME) Header: Multipurpose Internet Mail Extensions (MIME) headers are part of the metadata in emails and web documents that describe the type of content included within the message. These headers specify the media type and character encoding, which enable the transmission and correct interpretation of various content formats like images, audio, and text in different character sets.

Multi-Security Level (MSL): Systems that are designed to handle data of varying security levels simultaneously. These systems need to ensure the proper separation and access control between data categories to prevent unauthorized access or data leaks. These are particularly important in environments that manage classified, sensitive, or proprietary information.

Multitasking: The ability of an operating system to execute multiple tasks concurrently. It involves managing system resources among different applications or processes to enhance productivity and efficiency. While users may perceive their tasks as running in parallel, the operating system rapidly switches between tasks to give the appearance of simultaneous execution while ensuring each task receives the required resources.

Multitenant environments: A software architecture where a single instance of an application serves multiple user organizations or tenants. Multitenancy enhances resource efficiency and cost-effectiveness but requires careful data segregation to maintain security and privacy.