Challenges, CodeQL queries, CodeQL databases, and material for the CodeQL Zero to Hero blog post series.

• CodeQL zero to hero part 1: the fundamentals of static analysis for vulnerability research
• CodeQL zero to hero part 2: getting started with CodeQL
• CodeQL zero to hero part 3: security research
• CodeQL zero to hero part 4: Gradio case study
• CodeQL zero to hero part 5: debugging queries