As cyber security students & professionals, do we really need to care about Machine Learning? In this talk we will go over what machine learning is, what it can do, and how it can (and can't) help the cyber security profession. After taking a deep dive into a particular algorithm, where we will learn a bit of maths and logic behind how ML works, will focus on: examining how the industry is currently utilising it (ML for phishing detection, ML for NIDS and ML for SIEM), how adversaries could use it to our disadvantage and how Machine Learning is vulnerable to attack itself.