An exploit is a type of malicious software or code that is used to take advantage of a vulnerability in a computer system. Exploits are typically used to gain unauthorized access to a system, or to cause damage or disruption to the system. Exploits can be spread through malicious websites, emails, or other malicious software. Exploits can also be used to gain access to sensitive data or to delete or modify data on a system. Exploits can be used to gain access to a system without the user's knowledge or to take advantage of a system's security flaws. Exploits can also be used to launch distributed denial-of-service (DDoS) attacks, or to spread malware or other malicious code.