SecTalks Holland: 0x10 - hackers gathering

this meetup we will talk about:

• How I solved the QR-Code challenge and did not win a prize. (A CTF Walkthrough)
• a bit about stack overflows
• a quick intro into blockchain!

if you want to give a presentation / talk please reach out!

here is the CTF for the curious ones: https://imgur.com/a/3R3QvCv