Familiar with common security offense-and-defense techniques and the principles of common vulnerabilities, with in-depth research and demonstrable results in at least one specialized area, such as web security, host security (Windows / Linux / Mobile OS, etc.), deep learning (e.g., natural language processing), container security, vulnerability analysis and exploitation, network-traffic security, or cloud security. Proficient in the mechanisms and principles of common DDoS attack types, including network-layer flood attacks such as SYN Flood, UDP Flood, and ICMP Flood; application-layer resource-exhaustion attacks such as HTTP Flood and DNS Query Flood; as well as emerging hybrid attack patterns and DDoS techniques that exploit vulnerabilities.