denial of service

Crash through traffic

A denial of service is an attack that overwhelms a computer system or network with traffic, making it unavailable to legitimate users.

Often abbreviated DoS, or DDoS when distributed across many attacking machines: The website went down after a massive DDoS attack.

The term extends metaphorically to any deliberate flooding that prevents normal function.

attack

DDoS

Traffic flood attack

volumetric · teardrop · blackholing · scrubbing · mitigation

impact

outage

Loss of electrical service

unresponsive · timeout · latency · slowdown · crash · failure · disruption · inaccessibility

infrastructure

firewall

Network access control system

  • load balancerDistributes requests across servers
  • CDNDistributed web delivery infrastructure
  • proxyAuthorized substitute

IDS · IPS · router · network · bandwidth · DNS · ISP · data center · traffic analysis · threshold

motive

extortion

Obtaining through threats

revenge · distraction · smokescreen · protest · cyberwarfare · vandalism · takedown

Categories
Opposites
service availability

denial of serviceuptime

Continuous operational period

fault tolerance · load balancing · service delivery · redundancy · quality of service

cyber attack type

denial of servicedata breach

Unauthorized access to protected information

information theft · credential theft · espionage · unauthorized access · data harvesting

Family

denial, service, denies, denied, denying, deniable, undeniable, deniability, serve

Familiarity
Top 200,000
Profile
Used worldwide · Timeless · Abstract · Negative · Rated G