What do many of the top security breaches over the last few years have in common? Most of the victim enterprises spent millions of dollars on security, had SOCs, firewalls, IDFs and anti-virus systems. However, had they taken a more proactive approach they may have been able to identify the "hackers" within their systems before data was exfiltrated or Ransomware was installed. In this course we will discuss techniques used in threat hunting, identify products both open source and commercial that will assist the practitioner and review the areas and artifacts left behind by hackers that will show potential indicators that a system may have been compromised.