Martin,
Last but not least: I am also looking for anonymized statistical data about DDoS attacks which I could use in the thesis. I am mainly interested in data about the type of attacks, attack time, sources, source and destination ports, and so on. I know this something which is generally not shared, so I would really appreciate it if someone would be able to share such data.
Many companies are extremely reluctant to share their attack data. But that's OK, because there are other ways to get it. Have you investigated backscatter analysis? It's used to see ongoing and current Internet scope DDoS attacks. Inferring Internet Denial of Service Activity https://cseweb.ucsd.edu/~savage/papers/UsenixSec01.pdf Analyzing Large DDoS Attacks Using Multiple Data Sources https://www.cs.utah.edu/~kobus/docs/ddos.lsad.pdf ISP Security - Real World Techniques https://www.nanog.org/meetings/nanog23/presentations/greene.ppt A Summary of DoS/DDoS Prevention, Monitoring and Mitigation Techniques in a Service Provider Environment https://www.sans.org/reading-room/whitepapers/intrusion/summary-dos-ddos-pre... Maybe you have access to some public IPs, then you can do this data collection yourself. Regards, Tyler