An informative and detailed recap can be found as follows:
QUOTE: Exploit-based attacks, particularly against the Java development platform, continue to dominate. New developments continue in mobile malware, ransomware, Mac malware and phishing, as Bitcoin comes of age. Meanwhile, hacks and intrusions aimed at tech companies gain major mainstream press.
FULL 50 PAGE PDF http://www.f-secure.com/static/doc/labs_global/Research/Threat_Report_H1_2013.pdf
GREAT RESOURCE FOR ALL STUDIES http://www.f-secure.com/en/web/labs_global/whitepapers/reports