“The Symantec Internet Security Threat Report provides an annual overview and detailed analysis of Internet threat activity, malicious code, and known vulnerabilities. The report also discusses trends in phishing, spam and observed activities on underground economy servers…report sathe ys the U.S. was top country for malicious activity, making up 19% total.”

• Internet Security Threat Report: Volume XV: April 2010
• Executive Summary: April 2010