With enough care, this type of clipboard malware can be prevented. However, I am more concerned with the next type of malware that will change the address in the browser (source). For example, if you want deposit bitcoin to an exchange, the malware could change the address that the browser shows you to the attackers address. I don't think it is too difficult to create a chrome extension that does this (disguised under something else of course). You can compare the addresses (source and destination) and you will see no difference. How do you fight such an attack?