There is no conclusive response to this question as malware authors are constantly evolving their developments to avert detection. However, some of the most common types of zero day malware include:
� Worms: A worm is a kind of malware that is able to spread itself throughout a network without the requirement for user interaction. When they have infiltrated a system, this makes them exceptionally hard to contain and remove.
� Trojans: Trojans are pieces of malware that masquerade as legitimate programs or files in order to technique users into downloading and performing them. https://signsong.org.uk/?p=298 As soon as executed, the trojan will usually perform some destructive action, such as stealing information or setting up additional malware.
� Viruses: As the name suggests, viruses are pieces of code that reproduce themselves and infect other files on a system. Like worms, they can spread quickly and are often difficult to eliminate.
� Rootkits: Rootkits are a type of malware that permits an aggressor to get complete control over a system. They typically install themselves deep within the operating system, making them really challenging to remove and spot.