Recently, Microsoft released the new SIR (Security Intelligence Report). This 168-page document provides an overview of all the threats that are out there:

With a collection of data from Internet services and over 600 million computers worldwide, the Security Intelligence Report (SIR) exposes the threat landscape of exploits, vulnerabilities, and malware. Awareness of threats is a preventive step to help you protect your organization, software, and people.

If you’re only interested in the thread-trends in your region, you can go to the Regional Threat Assessment site and select your region.

- The SIR web site
- SIR Volume 11 (PDF)