Spam and Fraud Activity Trends | Analysis of Spam Activity Trends | Analysis of Spam Activity by Geography, Industry Sector and Company Size | Analysis of Spam Delivered by Botnets | Spam Botnet Analysis – A Strategic Viewpoint | Significant Spam Tactics | Spam by Language | Spam by Category | Future Spam Trends: BGP Hijacking | Phishing Activity Trends | Analysis of Phishing Activity by Geography, Industry Sector and Company Size
Analysis of Spam Activity Trends
BackgroundThis section discusses the patterns and trends relating to spam message volumes and the proportion of email traffic identified as spam during 2011.
MethodologyThe analysis for this section is based global spam and overall email volumes for 2011. Global values are determined based on the statistically representative sample provided by Symantec’s Brightmail2 operations and spam rates include spam blocked by Symantec.cloud.
Data and Commentary
- There were approximately 41.1 billion spam emails in circulation worldwide each day overall in 2011, compared with 61.6 billion in 2010; a decrease of 31.8% in global spam volume.
- Overall for 2011, 75.1% of email traffic was identified as spam, compared with 88.5% in 2010; a decrease of 13.4 percentage points.