Where Do Most Spams Come From?

Last week, Symantec announced that most spams come from Europe. But a news release by Sophos claims that Asia is where most spams originate from. According to this list, the Spam contribution from the different continents are

Asia – 32.1%
Europe – 27.1%
North America – 26.5%
South America – 12.5%
Africa – 1.1%

The top 5 countries dishing out spam are

1. USA
2. Russia
3. China (including Hong Kong)
4. Brazil
5. South Korea