Absolutely no day malware, also called absolutely no hour malware or no day attacks, is a kind of malware that benefits from a previously unknown software application vulnerability. https://zerogov.net/?p=2584 Attackers who have the ability to make use of these vulnerabilities can gain access to a system or network with no detection. This makes zero day malware a severe hazard to individuals and services alike.
i thought about this Traditional malware, on the other hand, is malware that is widely known and has been around for some time. Traditional malware can still be unsafe, it is not as stealthy or challenging to identify as zero day malware.