There is no conclusive answer to this question as the most common type of malware differs depending on which area of the world you lie in, and likewise changes over time. Some of the most common types of malware include viruses, worms, Trojan horses, and adware.
Viruses are one of the earliest and most typical types of malware. https://tastykoreachannel.com/?p=1663 Adware is a type of malware that displays marketing on a computer, often in a pop-up window.
Malware is continuously developing, and new types are continuously being created. The types talked about above are some of the most typical that you might come across. https://heathergreenphoto.com/?p=470