Gerardo Di Giacomo is a Chief Security Officer and seasoned security leader with over two decades of hands-on experience in application security, vulnerability management, secure architecture, threat modeling and applied cryptography. He has led product and ecosystem security at major organizations including Meta, Microsoft, Stripe, and Aptos Labs, blending purple-team pragmatism with a strong focus on usability, scalability and business requirements. Known as an effective communicator who translates technical risk for diverse stakeholders, he has driven security strategy across M&A, global operations and high-stakes product launches like Novi and WhatsApp Enterprise. He also contributes to open-source infrastructure work—improving Docker image build and fuzzer integration for the Aptos layer-1 blockchain—bringing a developer-first perspective to DevOps and security tooling. Based in Italy, Gerardo pairs academic training in information security with an uncommon breadth of experience from startups to hyperscale platforms, favoring practical, measurable defenses over theoretical perfection.
9 years of coding experience
20 years of employment as a software developer
Bachelor’s Degree, Computer Science, Not completed., Bachelor’s Degree, Computer Science, Not completed. at Università degli Studi di Salerno
Master’s Degree, Information Security and Assurance, Master’s Degree, Information Security and Assurance at Western Governors University
Aptos is a layer 1 blockchain built to support the widespread use of blockchain through better technology and user experience.
Role in this project:
DevOps Engineer
Contributions:147 reviews, 154 PRs, 211 pushes in 2 years 1 month
Contributions summary:Gerardo's contributions primarily revolve around improving the Docker image build and update processes within the Aptos core repository. They've updated Docker images, added a weekly Docker image updater script, and addressed workflow issues. The user also worked on fixing and refining the docker-update-images workflow. Additionally, they contributed to the fuzzer setup and integration within the project.
Contributions:70 commits, 14 pushes, 1 branch in 2 years 8 months
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Gerardo Di Giacomo - Chief Security Officer at Guerre di Rete