An exploit is a technique, tool, or piece of software designed to take advantage of a vulnerability or weakness in a computer system, application, or network. Cybercriminals use exploits to gain unauthorized access, steal data, or disrupt normal operations. Exploits can target flaws in software code, misconfigurations, or outdated systems. While some exploits are used for malicious purposes, security professionals may also use them in controlled environments to test and improve system defenses. Understanding exploits is essential for maintaining strong cybersecurity and protecting sensitive information.