Zero Day

 A zero-day (or 0-day) refers to a software vulnerability that is unknown to the software vendor or developers. Because the vendor hasn't had time to create a fix, hackers can exploit this vulnerability before a patch is available.

Types of Zero-Day Risks

1. Zero-Day Vulnerability – A flaw in software, firmware, or hardware that hasn’t been discovered by the vendor.  

2. Zero-Day Exploit – A method used by hackers to take advantage of a zero-day vulnerability. 

 
3. Zero-Day Attack – An actual cyberattack that exploits a zero-day vulnerability.  

             How Are Zero-Day Attacks Used?

- Hacking & Data Breaches – Attackers can steal sensitive data.  

- Malware Distribution – Malware (like ransomware or spyware) is installed via the exploit. 

 
- Targeted Cyber Espionage – Governments or cybercriminals use it for spying or sabotage.  

            Protection Against Zero-Day Attacks

- Keep software and systems updated.  
- Use advanced security solutions like AI-based threat detection.  
- Employ behavior-based anomaly detection.  
- Regularly back up data.