• A zero-day attack is a software-related attack that exploits a vulnerability that the vendor or developer was unaware of.

  • The name comes from the number of days the software developer was aware of the problem.
  • The solution to eliminate a zero-day attack is known as a software fix.
  • Zero-day attacks can be prevented, although not always, with antivirus software and regular system updates.
  • There are various markets for zero-day attacks, from legal to illegal. These include the white market, the gray market, and the dark market.