CISO strategies

Zero-day vulnerabilities refer to security flaws in software or hardware that are unknown to the vendor. Until the vulnerability is discovered and patched, it remains a potential entry point for attackers to exploit. The term “zero-day” reflects the number of days the vendor has had to address the flaw—zero. Consequently, zero-day attacks are challenging to defend against because they exploit vulnerabilities before any fix is available, making them prime opportunities for cybercriminals.