The chapter begins with a discussion about how hackers are increasingly broadening the scope of their attacks to include targeting the private data of cryptocurrency users. Next, a series of case studies is discussed, ranging from the May 2024 charges brought against a pair of brothers from MIT for allegedly exploiting an ETH MEV vulnerability to a crypto scam targeting entrepreneurs. Next, topics, including airdrop squatters, Sybil attacks, meme coin fraud, pig butchering, and fake app scams, are discussed. The chapter concludes with an examination of hacks involving artificial intelligence-focused blockchains and the efforts of law enforcement to infiltrate crypto hacker channels.