Table of Contents
Worldwide Detection of Denial of Service (DoS) Attacks
Outline
Key Idea
Backscatter Analysis Technique
Backscatter Example: Responses Monitored
Backscatter analysis
Assumptions and biases
Identifying attacks
Results
Attack breakdown (three weeks in February)
Attacks over time
Attack characterization
Attack duration distribution
Attack rate distribution
Victim characterization
Victim breakdown by TLD
Distribution of repeat attacks
Validation
Conclusions
Cooperative Association for Internet Data Analysis (CAIDA) San Diego Supercomputer Center Computer Science & Engineering University of California, San Diego http://www.caida.org/outreach/ papers/backscatter/
Example 1: Periodic attack (1hr per 24hrs)
Example 2: Punctuated attack (1min interval)
Backscatter protocol breakdown (one week)
Attack protocol breakdown (one week)
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