Helsinki-based F-Secure has just released its Threat Report for the first half of 2013, and much remains the same: Java in the browser is the main vector for attacks on PCs, Android is taking the brunt of mobile attacks, and Mac malware is growing from a minuscule base. However, the company says: "The most notable information security occurrence of early 2013 is undoubtedly the hacking and breach of several Internet giants (Twitter, Facebook, Apple, Microsoft) and of numerous other Silicon Valley companies via a watering hole at iPhone Dev SDK."
Read more at: "Watering holes" join Java as a major threat to corporate security, says F-Secure | ZDNet

The full report is available from F-Secure (PDF).