Zero-day vulnerabilities refer to security flaws or weaknesses in a system or software unknown to the vendor or the public. These vulnerabilities are called "zero-day" because the affected software has zero days to fix the issue before attackers can exploit it.

Zero-day vulnerabilities can be especially dangerous because attackers can use them to carry out targeted attacks, steal data, or gain unauthorized access to a system. Because the vendor is unaware of the vulnerability, no patches or workarounds are available to address the issue.

Zero-day vulnerabilities can be discovered by attackers or security researchers who identify and exploit the flaw for malicious purposes or to bring attention to the issue. Once found, the vendor can work to develop a patch or fix to address the vulnerability and protect users.

Zero-day vulnerabilities highlight the importance of implementing robust security measures, such as regularly updating software, and practicing good cybersecurity hygiene, to mitigate the risks of cyber attacks.

ThreatNG is an all-in-one external attack surface management (EASM), digital risk protection (DRP), and security ratings solution that fortifies an organization's resilience against zero-day vulnerabilities. By continuously monitoring and analyzing the organization's external digital assets, such as websites, applications, and network configurations, it proactively identifies potential points of exploitation. This proactive insight enhances internal security measures by enabling swift and informed responses to mitigate vulnerabilities, including rapid patching, threat intelligence sharing, and improved incident response strategies, thereby reducing the risk of falling victim to zero-day exploits and bolstering the organization's overall cybersecurity posture.