Zero day malware, likewise called no hour malware or no day attacks, is a type of malware that makes the most of a formerly unidentified software application vulnerability. Attackers who have the ability to make use of these vulnerabilities can get to a system or network with no detection. This makes no day malware a serious danger to individuals and businesses alike.
Standard malware, on the other hand, is malware that is widely known and has actually been around for some time. Although standard malware can still threaten, it is not as difficult or stealthy to find as zero day malware. https://tourismcrisis.org/?p=989