2022年全球DDoS攻击现状与趋势分析报告-76页_12mb

DDos Attack Analysis Summary

Key Trends in DDoS Attacks

DDoS attacks have seen a significant increase in intensity, frequency, and complexity over recent years. In 2022, attacks peaked with events like the internet's largest recorded attack at 3,189 Tbps during activities such as the FIFA World Cup. Attack frequency grew 167-fold from 2021 levels, with most attacks lasting under five minutes, challenging automated defense systems. Top attack vectors include ACK Flood, UDP Flood, and network layer CC attacks, with IoT-based Mirai malware driving network-layer CC innovations that evade detection effectively.

Industry Impact and Target Distribution

The finance industry is a primary target, with attack incidences and peak bandwidths rising substantially. In 2022, over 100 financial institutions were attacked, marked by high-frequency, multi-vector assaults during business periods, often aimed at portals, DNS, and APIs. Other sectors like media and internet, government and public services, education, and healthcare also face heightened risks, with attacks on educational and healthcare sectors growing exponentially due to their expanding online presences.

Emerging Threats

APIs have become new attack fronts, enabling diverse DDoS methods including encrypted application-layer attacks. Attacks leverage HTTP/2 multiplexing for high-RPS attacks, and vulnerabilities in public cloud services allow reflection amplification. Geographically, APAC regions lead in attack origins and targets, with Mirai and other IoT botnets dominating.

Expert Recommendations

Experts advise on constructing a multi-layer defense architecture:

• For financial institutions, use upstream cloud scrubbing, private network edge scrubbing, and WAFs to handle application-layer threats.
• For APIs, implement layered protections akin to website defenses to counter evolving attack vectors.

This summary captures the essence of the DDoS attack landscape, highlighting trends, impacts, and mitigation strategies.