Every day in December, we’re taking a look back at some of our favorite content of 2025. Today’s pick comes from ChrisWood​, Principal Application Security SME, who has selected a Challenge lab that tests your secure coding skills. 

Python: Expert Challenge 1

In this Python Advanced Application Security Challenge lab, you’ll need to identify and fix the vulnerabilities in the code. Since this is a Challenge lab, you’ll have minimal guidance to help you. 

Why this lab? 

With Python currently powering everything from backend web infrastructure to the world’s leading AI models, secure coding in this language has become a critical necessity. 

I picked this lab because it serves as a definitive benchmark for competence. It’s not just about learning theory – it asks the user to demonstrate advanced application security skills under strict constraints.

If you can pass this expert challenge, you prove you have the skills to secure the architecture of the future. Try Python: Expert Challenge 1 now, and share your progress in the comments below!