This report provides insights culled from a year of security data analysis and hands-on lessons learned. Data analyzed includes the 6.5 trillion threat signals that go through the Microsoft cloud every day and the research and realworld experiences from our thousands of security researchers and responders around the world. In 2018, attackers used a variety of dirty tricks, both new (coin mining) and old (phishing), in their ongoing quest to steal data and resources from customers and organizations. Hybrid attacks, like the Ursnif campaign, blended social and technical approaches. As defenders got smarter against ransomware, a loud and disruptive form of attack, criminals pivoted to the more “stealth”, but still profitable, coin-miners.