Globally, the volume of spam messages decreased from over 379 billion a day to about 124 billion between August 2010 and November 2011, a level similar to that recorded in 2007.
“Analyzing the countries where worldwide spam originates, India was the biggest source of spam in September 2011 (13.9%), followed by Vietnam (8%) and Russia (7.8%),” Cisco Romania said in a press release.
Cisco estimates the profits of cyber crime activities gained through the use of spam messages declined by more than 50% on the year between June 2010 and June 2011, from $1 billion to $500 million.