Hong Kong-based security firm Network Box reported that Korea was the country of origin for 31.1 percent of the malware on the Internet in March. In February the country only pumped out 8.9 percent, leading researchers to theorize that there has been a huge increase in infected machines there pushing out phishing spam.

Network Box includes phishing in its calculations of monthly malware statistics. They also include North and South Korea as one country in their categories, but say the lack of public computers in the North means that South Korea is the country of origin for the bulk of the statistic.

The US was second on the list at 9.34 percent.

See InfoSecurity story here: “Korea reigns as king of malware threats”