Word: Day Zero
Definition:
The day a new vulnerability is discovered, often referring to unpatched security flaws.
Sample Sentence:
Hackers exploited a day zero vulnerability before a patch could be released.
Why It Matters:
Day zero exploits are dangerous because they strike before defenses are in place.
Quick Tip:
Use threat intelligence and endpoint protection tools to detect zero-day attacks early.
Source: https://www.sans.org/security-resources/glossary-of-terms/
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