What is a zero day vulnerability?

What is a zero day vulnerability?

• A hole in software that is unknown to the vendor
• A vulnerability exploited after it has been patched
• An attack by a programmer on a vulnerability in their own code.
• An attack on the very first day of a product's release

EXPLANATION

A zero day vulnerability refers to a hole in software that is unknown to the vendor.
In a zero day attack, this security hole is exploited by hackers before the vendor becomes aware of the problem and patches it.

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