Denial-of-Service (DoS) Attack
When a hostile cyber threat actor prevents authorized users from accessing information systems, devices, or other network resources, it is said to be a denial-of-service (DoS) attack. Services that rely on the impacted computer or network, such as email, websites, online accounts (such as banking), or other services, may also be impacted. By bombarding the targeted host or network with traffic until it becomes unresponsive or fails, a denial-of-service condition is created, blocking access for authorized users. DoS attacks can cost a company money and time while its services and resources are unavailable.