In our second half (2H) of 2011 Advanced Threat Report, we provided compelling evidence that illustrated a possible correlation between an increase in email-based attacks and national holidays. Continuing this theme, let’s widen our dataset to worldwide and focus on the corresponding statistics collected year-to-date for 2012. To be clear, these statistics reflect the number of malicious attachments seen after initial SPAM and anti-virus filtering across our customer deployments who share intelligence back to us.
Figure 1. Rate of malicious attachments detected (worldwide) by relative volume (2H2011 + 2012YTD)
