Most Active Speaker

Joseph Katsioloudes

Joseph Katsioloudes

GitHub Security Lab

London, United Kingdom


Joseph is a security expert who empowers developers to ship secure software through his research and education work at the GitHub Security Lab. His recent contributions include video content with combined 1M+ views packed with practical security tips, and the free game for software developers who want to build a security skillset with 3K+ players worldwide in the first 6 months. As a speaker with 36 talks in the past 2 years, he captivates audiences with his insights and dynamic presentation style.


  • Most Active Speaker 2023

Area of Expertise

  • Information & Communications Technology


  • Software
  • Software Engineering
  • Artificial Inteligence
  • Artificial Intelligence and Machine Learning for Cybersecurity
  • cyber security
  • cyber attacks
  • Information Security
  • Technology
  • Software Security
  • Coding
  • Programming
  • GitHub
  • Software Development
  • Software Development Best Practices
  • SDLC
  • Secure SDLC
  • DevOps
  • DevSecOps
  • open source
  • Open Source Software

Security as Code: A DevSecOps Approach

Security as Code (SaC) is the methodology of codifying security tests, scans, and policies. Security is implemented directly into the CI/CD pipeline to automatically and continuously detect security vulnerabilities. Adopting SaC tightly couples application development with security and vulnerability management, while simultaneously enabling developers to focus on core features and functionality. More importantly, it improves the collaboration between Development and Security teams and helps nurture a culture of security across the organization.

In this session, we will review lessons learned from DevOps to implement a successful DevSecOps culture, in particular how we can make developers contribute security checks with the SaC approach. We will introduce CodeQL, a language that allows us to implement security checks with code, and will demo how we can code queries for vulnerabilities and misconfigurations so they can be identified as soon as they hit your CI/CD pipeline.

Code Security Reinvented: Navigating the era of AI

Artificial intelligence (AI) already serves as a copilot in our daily lives, acting as a digital assistant and delivering personalized experiences. Despite progress in many areas, AI has historically fallen short of improving software development practices. This changed with the introduction of AI pair programmers, which distill the collective technical know-how of the world’s developers, and their widespread adoption has been quite telling.

While the process of building software has become easier and faster, the question remains: What about more secure? In this session, we’ll demonstrate several ways developers can use AI to leverage the world's security knowledge through dozens of practical demos in GitHub Copilot. The audience will gain a deep understanding of AI capabilities, along with insights and best practices drawn from the lessons we learned as developers striving to ship secure code.

Breaking Barriers: The Art of (Free) Gamified Security Training

In a world where security training often feels like a mundane chore, discover the refreshing impact of gamification and turn learning into an enjoyable experience. Embark on an insightful journey as we unveil the success story of, an open-source game hosted on GitHub Skills, that attracted over 3,000 developers within the first 6 months.

This session will provide you with an exclusive behind-the-scenes perspective, offering valuable insights and practical strategies to revolutionize various aspects of security training for your benefit. We’ll explore a case study from a tech startup that observed, among the developers who played the game, an increased sense of ownership for code security, improved communication with security teams, and a strong willingness to embrace further security training.

Navigating the Impact of AI, Developer Experience and Communities on Software Security

Discover the impact of AI, Developer Experience (DevEx), and communities on software security through real-world examples derived from securely building GitHub using GitHub. Uncover valuable insights into the dynamic interplays between these three transformative forces, paving the way for a new era in software development and, consequently, for software security.

This session will provide you with an exclusive behind-the-scenes perspective, offering insights into how GitHub enhances various elements of the Secure Software Development Life Cycle (SSDLC), benefiting from each driving force and their interplays. We will explore practical strategies for software security, supply chain, secrets hygiene, automation and security culture. The audience will gain a deep understanding of industry-leading software practices, drawn from our experiences as developers helping others with security in a rapidly changing landscape.

WeAreDevelopers World Congress 2024 Sessionize Event

July 2024 Berlin, Germany

AI_dev: Open Source GenAI & ML Summit Europe Sessionize Event

June 2024 Paris, France

KCD Czech & Slovak 2024 Sessionize Event

June 2024 Prague, Czechia

DeveloperWeek Global 2024 Sessionize Event

June 2024

DevSum 2024 Sessionize Event

May 2024 Stockholm, Sweden

State of Open Con 24 Sessionize Event

February 2024 London, United Kingdom

NDC Security 2024 Sessionize Event

January 2024 Oslo, Norway

NDC Porto 2023 Sessionize Event

October 2023 Porto, Portugal

Infobip Shift 2023 Sessionize Event

September 2023 Zadar, Croatia

WeAreDevelopers World Congress 2023 Sessionize Event

July 2023 Berlin, Germany

DevBcn 2023 Sessionize Event

July 2023 L'Hospitalet de Llobregat, Spain

DevSecCon24 2023 Sessionize Event

June 2023

Appdevcon / Endpointcon 2023 Sessionize Event

May 2023 Amsterdam, The Netherlands

DeveloperWeek Europe 2023 Sessionize Event

April 2023

Future Tech 2023 Sessionize Event

March 2023 Utrecht, The Netherlands

NDC Security 2023 Sessionize Event

January 2023 Oslo, Norway

TechBash 2022 Sessionize Event

November 2022 Mount Pocono, Pennsylvania, United States

Joseph Katsioloudes

GitHub Security Lab

London, United Kingdom


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