South Korea, Brazil, India and USA account for over 30% of all the spam relayed by hacked computers around the globe. Sophos research shows that in the last 12 months China has dropped off the list of the top 12 countries which are relaying spam from compromised computers. A new dirty gang of four South Korea,. Brazil, South Korea and India and their ringleader USA account for more than 30 per cent of all spam relayed from hacked computers in the past year.”]
Source: https://grahamcluley.com/china-slides-list-top-spamrelaying-nations/