Zero day malware, likewise referred to as no hour malware or zero day attacks, is a type of malware that makes the most of a previously unknown software vulnerability. Attackers who have the ability to make use of these vulnerabilities can get to a system or network with no detection. This makes absolutely no day malware a major risk to people and organizations alike.
Traditional malware, on the other hand, is malware that is popular and has actually been around for some time. Conventional malware can still be harmful, it is not as challenging or sneaky to detect as absolutely no day malware. https://zerogov.net/?p=778