Explore the current landscape and future implications of malicious WebAssembly in this 31-minute conference talk. Delve into the evolution of WebAssembly since its introduction in March 2017, examining its performance benefits and various ports. Gain insights into attacker models, prevalence, and usage patterns through comprehensive crawling and cluster analysis. Investigate custom implementations, libraries, and test cases, with a focus on gaming applications. Learn about cryptojacking and mining techniques, as well as obfuscation methods employed by malicious actors. Conclude with a discussion on potential future developments and their impact on web security.