No day malware, also known as absolutely no hour malware or absolutely no day attacks, is a type of malware that makes the most of a formerly unidentified software vulnerability. Attackers who have the ability to make use of these vulnerabilities can access to a system or network without any detection. This makes zero day malware a major danger to organizations and individuals alike.
Traditional malware, on the other hand, is malware that is popular and has actually been around for a long time. https://catbitcoin.com/?p=905 Although standard malware can still threaten, it is not as sneaky or difficult to detect as absolutely no day malware.