A “black hat hacker” is a computer hacker who operates maliciously. Black hat hackers typically steal data, commit fraud, or engage in other illegal activities online. To achieve their goals, black hat hackers can work for themselves or with other groups of hackers. Black hat attacks can occur in the cryptocurrency industry and are typically aimed at stealing cryptocurrency through various means (such as hacking into user exchange accounts and wallets). White hat hackers, on the other hand, are typically hired to perform various tasks that prevent unethical behavior online.