The FREE Cybersecurity Glossary by Thor Pedersen!

Shared-secret encryption: A type of encryption where the same secret key is used by both the sender and the receiver to encrypt and decrypt messages. It is often used in symmetric-key cryptography, where the same secret key is used by both parties to encrypt and decrypt messages. For instance, in a shared-secret encryption system, the sender and receiver may agree on a secret key and use that key to encrypt and decrypt messages sent between them.

Shell: A command-line interface for accessing an operating system's services. It is used to perform tasks and manage system resources through the use of commands and scripts. Examples include the Bash shell on Linux systems and the PowerShell on Windows systems.

Shell programming: The use of a shell to automate tasks and perform complex operations on a computer. It is used in system administration and automation to efficiently manage and manipulate system resources. Examples include shell scripts to automate backups or to monitor system performance.

Shielded enclosure: A protective covering or enclosure that is designed to block electromagnetic interference (EMI). It is used in electrical and electronic systems to prevent EMI from affecting the operation of the system. Examples include shielded cables and enclosures for sensitive electronic equipment.

Shielded Twisted Pair (STP): A type of electrical cable used in networking applications, featuring shielding around the twisted pairs of wires to reduce electromagnetic interference. Commonly used in Ethernet networks and for connections requiring enhanced protection from external noise, such as connecting computers, printers, and security cameras to a network.

Shimmer: A type of skimming device that is inserted into a card slot, such as those on ATMs or point-of-sale terminals, to read data from chip-based credit and debit cards. Unlike traditional skimmers, shimmers are thinner and target the chip instead of the magnetic stripe, making them harder to detect.