A Cryptocurrency Stealer is a type of malicious software specifically designed to secretly steal digital currencies such as Bitcoin, Ethereum, or other cryptocurrencies from users’ wallets. These stealers infiltrate computers or mobile devices, often through phishing emails, malicious downloads, or compromised websites. Once installed, they search for wallet files, private keys, or clipboard data containing sensitive information, then transmit this data to cybercriminals. Victims can lose their entire cryptocurrency holdings, as transactions are irreversible and difficult to trace. Protecting against cryptocurrency stealers requires up-to-date security software, caution with downloads, and secure storage of wallet credentials.