What is the most typical kind of absolutely no day malware?

No day malware is a type of malware that is not yet understood to the anti-virus software.  go now The most typical type of no day malware is a trojan horse.  https://romanquarterconsultation.co.uk/?p=237 A trojan horse is a type of malware that disguises itself as a safe program in order to acquire access to a system.