The ever growing level of spam (as well as the increased level of complexity) have forced researchers to continually monitor the situation:
“The spam war is a continuous battle between spammers and security vendors,” said Dean Drako, president and CEO of Barracuda Networks. “Security vendors now require 24-by-7 defense operations to continuously monitor the Internet for new spam trends and distribute new defensive solutions immediately. This combination can block a new spam attack within minutes of its start – virtually at zero hour.”
In a separate poll, researchers found the 50% of users received five or fewer spam emails in their inbox each day, while 65% received less than 10 spam messages each day. 13% of the respondents has the “honor” were flooded with a minimum of 50 spam emails on a daily basis.