Denial of Service

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1. A Denial of Service (DoS) attack refers to a target system or resource within the organization being flooded with traffic via its network connection by a single computer.

(Source: Business Continuity Management Institute - BCM Institute)


2. A Denial-of-Service (DoS) attack is an attack meant to shut down a machine or network, making it inaccessible to its intended users. DoS attacks accomplish this by flooding the target with traffic, or sending it information that triggers a crash. In both instances, the DoS attack deprives legitimate users (i.e. employees, members, or account holders) of the service or resource they expected.
Source: (Palo Alto Networks, 2017)

3. In a denial-of-service (DoS) attack, an attacker attempts to prevent legitimate users from accessing information or services. By targeting your computer and its network connection, or the computers and network of the sites you are trying to use, an attacker may be able to prevent you from accessing email, websites, online accounts (banking, etc.), or other services that rely on the affected computer.
Source: (US-CERT, 2013)