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Glossary of terms and definitions for IT (Information Technology), the Internet and cyber security.
This glossary provides more than 480 clear and concise definitions of commonly used terms in the fields of information technology, the internet, and cyber security. It is designed to support users of all levels in understanding key concepts, technical jargon, and acronyms frequently encountered across digital platforms and security-related discussions. Whether you are a business owner, student, professional, or simply interested in the digital landscape, this resource aims to enhance your knowledge and confidence in navigating the ever-evolving world of technology.
The process of converting encrypted data back into its original form.
Example: The file could only be accessed after successful decryption.
See also: Encryption
The practice of securing information by converting it into an unreadable format (encryption) so only authorised users can decode it.
Example: Sending an encrypted email so only the intended recipient, who has the decryption key, can read it.
The process of converting data into a coded format to prevent unauthorised access. Only those with the decryption key can read it.
Example: Your online banking app encrypts your data, so even if it's intercepted, it can't be read without the correct key.
See also: Encryption, Decryption
A method of securing digital information by converting it into a coded format that can only be read by someone with the correct decryption key.
Example: Encryption protected the files during cloud transfer.
See also: Decryption
A physical device that securely manages and protects cryptographic keys, performing encryption and decryption operations.
Example: Banks use HSMs to secure customer transaction data and protect encryption keys from theft.