A zero-day refers to a security vulnerability in software or hardware that is unknown to the vendor and lacks a patch or fix. Since the vendor has had zero days to address the issue, these vulnerabilities are highly valuable to attackers. Exploiting such vulnerabilities can lead to unauthorized access, data breaches, or system compromises.
Key Points:
- Zero-Day Vulnerability: An undiscovered flaw in software or hardware that has not been patched.
- Zero-Day Exploit: A method or tool that takes advantage of a zero-day vulnerability to perform malicious actions.
- Zero-Day Attack: An attack that utilizes a zero-day exploit to compromise systems or data.