There is no definitive response to this question as the most common kind of malware varies depending on which area of the world you are located in, and likewise changes gradually. i was reading this Nevertheless, a few of the most typical kinds of malware consist of viruses, worms, Trojan horses, and adware.
Viruses are among the earliest and most common kinds of malware. They are programs that are created to duplicate themselves and infected other computer systems. Worms are similar to viruses, but they are able to spread out without requiring to connect themselves to another program. Trojan horses are programs that masquerade as something else, such as a game or a legitimate program, however are actually harmful. Adware is a kind of malware that displays marketing on a computer system, frequently in a pop-up window.
Malware is continuously evolving, and new types are constantly being produced. https://westpennjournal.com/?p=338 The types talked about above are some of the most typical that you might encounter.