Do you know source code? or perhaps you know vulnerabilities? See where they intersect and how most vulnerabilities are created. This talk will present a plethora off *common* vulnerabilities introduced by programming mistakes. Perhaps you have seen a "spot the vulnerability" challenge on social media before? Come along and see if you can spot the vulnerability in the presented code snippets before they are explained. Come participate in this light-hearted "spot the vuln" session. Several languages will be presented, audience participation will be rewarded.