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A cyberattack is any type of offensive maneuver employed by individuals or whole organizations that targets computer information systems, infrastructures, computer networks, and/or personal computer devices by various means of malicious acts usually originating from an anonymous source that either steals, alters, or destroys a specified target by hacking into a susceptible system.
Distributed networks including communication networks are usually designed so that nodes can enter and exit the network freely. [9] However, this poses a danger in which attacks can easily access the system and may cause serious consequences, for example, leakage of the user’s phone number or credit card number. [9]
Attacks can be from two categories: "Passive" when a network intruder intercepts data traveling through the network, and "Active" in which an intruder initiates commands to disrupt the network's normal operation or to conduct reconnaissance and lateral movements to find and gain access to assets available via the network. [10] Types of attacks ...
In incidents analysed by Mandiant, the average period over which the attackers controlled the victim's network was one year, with longest – almost five years. [30] The infiltrations were allegedly performed by Shanghai-based Unit 61398 of People's Liberation Army. Chinese officials have denied any involvement in these attacks. [32]
A cyberattack can be defined as any attempt by an individual or organization "using one or more computers and computer systems to steal, expose, change, disable or eliminate information, or to breach computer information systems, computer networks, and computer infrastructures". [1]
Because side-channel attacks rely on the relationship between information emitted (leaked) through a side channel and the secret data, countermeasures fall into two main categories: (1) eliminate or reduce the release of such information and (2) eliminate the relationship between the leaked information and the secret data, that is, make the leaked information unrelated, or rather uncorrelated ...
Computer and network surveillance – Monitoring of computer or network activity; Side-channel attack – Any attack based on information gained from the implementation of a computer system; Steganography – Hiding messages in other messages; Subliminal channel – Covert cryptographic channel
In 2015, due to possible attacks to Network Time Protocol, [27] a Network Time Security for NTP (Internet Draft draft-ietf-ntp-using-nts-for-ntp-19) [28] was proposed using a Transport Layer Security implementation. On June 21, 2019 Cloudflare started a trial service around the world, [29] based on a previous Internet Draft. [30]
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