There are many places to find backward-looking statistics of how many attacks were launched in cyberspace. Forward-looking guidance areas that security managers should focus on are harder to find. In times of economic uncertainty, it is even more critical for security teams to prioritize resources to increase effectiveness and efficiency in dealing with known threats while also minimizing the risk from emerging attacks. For the past 14 years, the SANS “Five Most Dangerous Attacks” expert panel at the annual RSA Conference has filled that gap. This SANS whitepaper begins with a baseline of statistics from three of the most reliable sources of breach and malware data, then summarizes the expert advice from the SANS instructors on the RSA panel, detailing the emerging threats to look out for in 2020 and beyond—and what to do about them.