Szilárd Pfeiffer is a Cyber Security Manager based in Budapest with 13 years of hands-on experience building and securing complex network and application-level systems. He combines deep low-level development expertise (C/C++, kernel modules) and protocol-level knowledge (TLS, HTTP, SMTP, SSH) with product and team leadership gained as head of software development and security researcher. An open-source enthusiast, he has contributed TLS/SSL work to the dpkt packet library, demonstrating practical cryptographic protocol insight beyond typical managerial duties. Szilárd publishes and presents research for both technical and popular audiences, bridging rigorous security research with accessible communication and product application. Comfortable as a developer, scrum master, and manager, he is known for emphasizing clean code, CI practices, and pragmatic risk assessment in operational environments.
13 years of coding experience
20 years of employment as a software developer
Bachelor of Science - BS Electrical Electronics and Communications Engineering, Bachelor of Science - BS Electrical Electronics and Communications Engineering at Óbuda University
Associate's degree Journalism, Associate's degree Journalism at MÚOSZ Bálint György Újságíró Akadémia
Associate's degree Quality Control Technology/Technician, Associate's degree Quality Control Technology/Technician at Dennis Gabor College
Computer Programming Accounting, Computer Programming Accounting at Bolyai János Közgazdasági Szakközépiskola
fast, simple packet creation / parsing, with definitions for the basic TCP/IP protocols
Role in this project:
Back-end Developer
Contributions:10 commits, 5 PRs, 1 comment in 4 months
Contributions summary:Szilárd primarily contributed to the `dpkt` library, focusing on SSL/TLS protocol implementation. They made several code changes, including removing redundant code, storing cipher suite objects, and adding properties to cipher suites. Furthermore, the user updated cipher suite definitions and associated tests, demonstrating a deep understanding of the protocol's intricacies. These contributions suggest a focus on enhancing the library's capabilities in handling cryptographic protocols.
Contributions:1 release, 81 pushes, 7 branches in 1 year 5 months
low-level
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Szilárd Pfeiffer - Cyber Security Manager at Vodafone Hungary