Stay updated on DoS threats. Explore the latest news and insights on Denial of Service attacks, prevention tips, and cybersecurity strategies.
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Background for this topic.
Denial of service (DoS) is an attack that makes a system, network, or application unavailable by exhausting resources or triggering failure. Floods can consume bandwidth, connection state, CPU, memory, or request-processing capacity; a software defect may instead be exploited to crash a service. A distributed denial-of-service (DDoS) attack generates traffic from many systems, increasing volume and complicating source-based blocking. The material security impact is loss of availability for users and dependent services, including websites, APIs, DNS, and operational systems.
Mitigation should match the bottleneck. Rate limits, request validation, connection protections, caching, and service isolation can reduce application and state-exhaustion attacks; volumetric traffic generally needs filtering or absorption upstream of the network. Monitoring should distinguish abnormal request patterns from ordinary load and alert on saturation, while tested failover, traffic diversion, and restoration procedures limit outage duration. Vulnerability management and timely patching reduce DoS caused by remotely triggerable crashes, but do not replace capacity planning and resilience testing.
Organizations that rely on their content delivery network provider for Web application firewall services may be inadvertently leaving themselves open to attack.
Firm Allegedly Embedded DDoS at the Request of a Foreign ClientA South Korean company exported 240,000 satellite receivers with distributed denial-of-service attack capabilities, leading to the arrest of its CEO by the Korean National Police Agency. The company and its employees face criminal prosecution for allegedly violating South Korea’s cybersecurity laws.
South Korean police have arrested a CEO and five employees for manufacturing over 240,000 satellite receivers pre-loaded or later updated to include DDoS attack functionality at a purchaser's request. [...]