- Elevation of privilege A scenario where a user or process gains higher access rights or permissions than they're intended to have, typically resulting in unauthorized control over system resources. It often constitutes a serious security flaw, as it allows the individual or process to bypass restrictions, potentially leading to information theft, data corruption, or additional harmful activities.
- El Gamal AlgorithmA public key cryptosystem based on the Diffie-Hellman key exchange. It was developed by Taher ElGamal in 1985 and is used for digital signatures, key agreements, and encryption. The El Gamal encryption system is an alternative to the RSA algorithm and relies on the difficulty of calculating discrete logarithms for providing security. It has the property that each plaintext message is encrypted to a different ciphertext message using a randomly chosen parameter, even if the same plaintext message is encrypted multiple times.
- Elliptic Curve Cryptography (ECC) A public key encryption technique based on elliptic curve theory that can be used to create faster, smaller, and more efficient cryptographic keys. ECC generates keys through the properties of the elliptic curve equation instead of the traditional method of generation as the product of very large prime numbers, offering equivalent security with lower computing power and battery resource usage.
- Elliptic Curve Digital Signature Algorithm (ECDSA)A cryptographic algorithm that uses elliptic curves for the creation of digital signatures. It's widely recognized for its strength despite using shorter key lengths, which results in more efficient processing. ECDSA provides assurance of data integrity, sender authenticity, and non-repudiation, meaning the signer cannot credibly deny having signed the data.
- ELSEC (Electronic Security) A term encompassing the various methods and practices aimed at safeguarding electronic systems from unauthorized access, use, disclosure, disruption, modification, or destruction. ELSEC includes the protection of information and assets related to computing, telecommunications, and any other forms of electronic data storage and transmission. The goal of electronic security is to ensure the confidentiality, integrity, and availability of electronic information and to preserve the functionality of electronic services and infrastructure. ELSEC is a critical aspect of overall cybersecurity strategies in both private and public sectors.
- Email spoofing A malicious practice where the headers of an email are manipulated to make it appear as though the message originated from a different sender. This is often used in phishing and spam campaigns, where the attacker aims to trick the recipient into trusting the false sender, potentially leading to data breaches, financial loss, or other forms of harm.
- Embedded System A dedicated computer system with a specific function within a larger mechanical or electrical system, often with real-time computing constraints. It is embedded as part of a complete device, often including hardware and mechanical parts. Embedded systems control many devices in common use today and are typically designed for specific control tasks with varying degrees of complexity. They range from simple microcontroller-based systems to complex systems-on-chips (SoCs) and are found in numerous applications, including consumer electronics, automobiles, medical devices, industrial controls, and aerospace.
- Emerging Cloud Technologies The new and advanced developments in cloud-based services and infrastructure. It covers technologies such as serverless computing, artificial intelligence (AI) and machine learning (ML) platforms, edge computing, and advanced security solutions in the cloud. As these technologies evolve and gain adoption, they bring along new potential vulnerabilities and attack vectors, making their secure implementation and management critical.
- EMI (Electromagnetic Interference) The disruption of an electrical circuit's performance due to external electromagnetic radiation or other electrical devices. EMI can interfere with the normal operation of electronic devices, including computers and networking equipment, which can lead to data loss, system errors, or even equipment failure, creating potential risks for data integrity and system availability.
- Encapsulating Security Payload (ESP) A component of the Internet Protocol Security (IPSec) suite used for ensuring secure communication by providing confidentiality, data origin authentication, connectionless integrity, and anti-replay. ESP achieves this by encapsulating the data to be protected, thus hiding the original data and safeguarding the integrity of the transmitted data.
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