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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.
An email authentication method that uses cryptographic signatures to verify that an email was sent from an authorised mail server and that its content has not been tampered with during transit.
Example: An outgoing email is digitally signed with DKIM, and the recipient's mail server verifies the signature to confirm its authenticity.
An email authentication protocol that uses SPF and DKIM to verify an email's authenticity and provides domain owners with reporting capabilities to monitor and enforce email authentication policies.
Example: A company implements a DMARC policy to instruct recipient servers to reject any emails that fail SPF or DKIM checks.