What is the most common type of no day malware?

No day malware is a type of malware that is not yet known to the public or to anti-viruses software application vendors. As soon as the vulnerability is made public, the software supplier can create a patch to fix it.

There are various kinds of no day malware, but the most common is probably the "zero day trojan" or "no day worm". These types of malware are developed to spread out rapidly and infect as numerous computer systems as possible. They typically make use of weak points in e-mail programs or social networking websites to spread out.

Zero day malware can be really hard to remove and spot.  i thought about this Even if you have actually anti-viruses software installed, it may not be able to find and get rid of the malware if it is not yet understood to the software.  https://scarabnet.org/?p=1425 If you believe your computer may be contaminated with zero day malware, it is best to take it to a professional for assistance.