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Security Beginner

What is DDoS (Distributed Denial of Service)?

An attack that floods a target server or network with traffic from multiple sources to overwhelm it and deny service to legitimate users.

DDoS attacks use thousands of compromised devices (botnets) to generate massive traffic volumes. Types include volumetric attacks (flood bandwidth), protocol attacks (exploit protocol weaknesses), and application layer attacks (target specific services).

Mitigation includes CDN/DDoS protection services (Cloudflare, AWS Shield), rate limiting, geo-blocking, traffic analysis, and over-provisioning. DDoS attacks are common and can target any internet-facing service. Protection should be part of every production architecture.

Related Terms

SOC (Security Operations Center)
A centralized team and facility responsible for monitoring, detecting, analyzing, and responding to cybersecurity threats 24/7.
Security Hardening
The process of reducing a system's attack surface by disabling unnecessary services, applying patches, and configuring security controls.
Session Hijacking
An attack where an adversary takes over a legitimate user session by stealing or predicting the session identifier.
Vulnerability Scanning
Automated testing that identifies known security weaknesses in systems, applications, and network infrastructure.
OWASP Top 10
A regularly updated list of the ten most critical web application security risks, published by the Open Web Application Security Project.
Security Audit
A systematic examination of an information system to assess compliance with security policies, identify vulnerabilities, and verify controls.
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