Zero-day exploit

A zero-day is an issue in hardware or software that is not known by the people who make or sell the product and there is no fix or "patch" to fix the problem. It is called a zero-day because the people who make or sell the product have "zero days" to make a fix for the problem.

Zero-day Exploit Media

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  Timeline of a hardware/software vulnerability that is exploited in a zero-day attack and later patched

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