Nine months on from CAN-SPAM legislation, US attempts to clean up its spamming act appear to have had little impact.

Research by computer security specialist Sophos shows the US remains by far the world's biggest exporter of spam, accounting for 42.53 percent of all electronic junk mail.

The UK makes an appearance in the world's top 12 'dirty dozen', but remains near the bottom of the pile at number 10 accounting for just 1.15 percent.

Canada, meanwhile, has shown its miscreant neighbour that it's possible to take positive action against spammers.

In the past six months it has managed to cut the percentage of the world's junk email sent from the country by over half - from 6.8 percent to 2.9 percent today.

All eyes, however, are on the most broadband-connected country in the world. South Korea has consolidated its position as a leading producer of spam - almost tripling the percentage of worldwide spam since February (15.42 percent).

The top twelve spam producing countries are as follows:

1. United States 42.53%
2. South Korea 15.42%
3. China (& Hong Kong) 11.62%
4. Brazil 6.17%
5. Canada 2.91%
6. Japan 2.87%
7. Germany 1.28%
8. France 1.24%
9. Spain 1.16%
10. United Kingdom 1.15%
11. Mexico 0.98%
12. Taiwan 0.91%