The company reported that spam volumes increased by 16 per cent from Q1 2010 to Q2 2010. Compared with Q2 2009, however, spam levels were down by 15 per cent.
Google said that virus levels had increased by 250 per cent since Q2 2009, but had only increased by 3 per cent from Q1 2010 to Q2 2010.
The company said: "Spam and virus volumes this year have continued their upward trend. These trends tell us that the spammers are still extremely active, and their botnets produce high levels of spam and virus traffic."