US has again achieved the dubious distinction of being responsible for maximum amount of spam (35%) with South Korea (25%) at second place.

What is more interesting is:

According to Sophos more than 50% of all spam is sent from "zombie" PCs, computers that have been take over by hackers or virus writers.


The good news is:

Deborah Platt Majoras, the US's top consumer protection official, said on Thursday that data from internet service providers (ISPs) suggested the deluge of unwanted emails selling sex, drugs and get-rich quick schemes may be waning.

Source: BBC