A zero-day attack is a type of cyber attack that exploits a previously unknown vulnerability in a computer system). The term "zero-day" refers to the fact that the vendor or developer has only just learned of the flaw, which means they have “zero days” to fix it. Once hackers discover a zero-day vulnerability, they can create a zero-day exploit, which is a method of attack that takes advantage of the vulnerability. Zero-day attacks are especially dangerous because the only people who know about them are the attackers themselves, and they can remain undetected even after they are launched).
Zero-day attacks can take many forms, such as missing data encryption, SQL injection, buffer overflows, missing authorizations, broken algorithms, URL redirects, bugs, or problems with password security. They are difficult to protect against because they are unknown to the public, and it can take time for developers to find a fix for the problem. Organizations that are attacked by a zero-day exploit might see unexpected traffic or suspicious scanning activity originating from a client or service.
Zero-day protection is the ability to provide protection against zero-day exploits). Some of the zero-day detection techniques include signature-based detection, heuristic-based detection, and behavior-based detection. It is important for users of secure systems to exercise common sense and practice safe computing habits to reduce the risk of falling victim to a zero-day attack).
