Heap 3 was a Medium Binary Exploitation challenge from picoCTF 2024. It has around 4,000 user solves as of writing this.

Babybof was an Easy Binary Exploitation challenge from UoftCTF 2026. It was the most solved Binary Exploitation challenge.

Cookie Monster Secret Recipe was an Easy Web Exploitation challenge from picoCTF 2025. It has almost 30,000 user solves as of writing this.