“The trend in targeted attacks suggests there may be a seasonal pattern as the number of targeted attacks always seems to be higher at this time of year,” said Paul Wood, MessageLabs Intelligence Senior Analyst, Symantec.cloud. “As the financial year draws to a close in many countries, it is also possible that the timing is perfect for cybercriminals seeking information about the financial performance of a company, and a carefully crafted attack may be just the means by which they can achieve this.”
Spam: In April 2011, the global ratio of spam in email traffic from new and previously unknown bad sources decreased by 6.4% points since March 2011 to 72.9% (1 in 1.37 emails).
Viruses: The global ratio of email-borne viruses in email traffic from new and previously unknown bad sources was one in 168.6 emails (0.593%) in April, an increase of 0.114% points since March.
Web security: Analysis of web security activity shows that an average of 2, websites each day were harbouring malware and other potentially unwanted programs including spyware and adware, a decrease of 18.2% since March 2011.
• In Australia, 1 in 271.3 emails were malicious and, 1 in 321.0 for Hong Kong, for Japan it was 1 in 902.9 compared with 1 in 640.0 for Singapore.
• Spam levels for the Education sector were 74%, 72.8% for the Chemical & Pharmaceutical sector, 72.5% for IT Services, 71.8% for Retail, 70.9% for Public Sector and 72.2% for Finance.
• In April, the Public Sector remained the most targeted industry for malware with 1 in 26.4 emails being blocked as malicious.
• Virus levels for the Chemical & Pharmaceutical sector were 1 in 157.4, 1 in 260.4 for the IT Services sector, 1 in 287.6 for Retail, 1 in 87.1 for Education and 1 in 209.5 for Finance.
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