Alex Grinberg is the Guildmaster and lead security instructor at Hackers Guild, bringing over a decade of experience in offensive security, firmware and APK reverse engineering, red-team operations, and malware analysis. His background spans independent security research, penetration testing, and tooling development for high-assurance environments. At the Guild, Alex leads advanced technical training and shapes the curriculum with a focus on practical, real-world hacking skills taught with precision, insight, and a dry sense of humor. He embodies the Guild’s ethos of serious skills, authenticity, and community-driven learning.