Definition

Attackers exploit these vulnerabilities before the vendor is aware of the issue, giving them a critical window of opportunity. _ A zero-day vulnerability refers to a software or hardware flaw that is unknown to the vendor and has no available patch

Used Cases

• Used by attackers to exploit unknown weaknesses in software, often causing severe damage or data breaches.• Employed in targeted attacks, particularly against critical infrastructure or high-value targets, where vulnerabilities have not yet been discovered.

FAQs

What makes a zero-day vulnerability dangerous?

Zero-day vulnerabilities are dangerous because there is no existing fix, and attackers can exploit the flaw before the vendor has time to develop a patch.

How are zero-day vulnerabilities discovered?

In some cases, they are used by nation-state actors or advanced threat groups before the vulnerability becomes widely known. They can be discovered by researchers, ethical hackers, or cybercriminals

How can organizations defend against zero-day attacks?

Organizations can use threat intelligence, behavior-based detection systems, and endpoint protection solutions to detect unusual activity that might indicate a zero-day exploit.

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