A Sophos report has found that the US sent out the greatest amount of spam between October and December 2010, with India, Brazil, the UK, and Russia making up the rest of the top five.
Europe remained the continent responsible for sending out more spam than any other, with a 32.11 per cent share. Asia was just behind on 31.89 per cent.
Whilst there was not much of a shake-up in terms of countries, spammers' tactics have altered a little.
"Spam is certainly here to stay, however, the motivations and the methods are continuing to change in order to reap the greatest rewards for spammers," said Graham Cluley, senior technology consultant at Sophos.
"What's becoming even more prevalent is the mailing of links to poisoned web pages - victims are tricked into clicking a link in an email, and then led to a site that attacks their computer with exploits or attempts to implant fake anti-virus software."