Cybercrime is a growing problem and fighting it requires cooperation. The document discusses how cybercriminals exploit common software like operating systems, browsers, email clients and media players to distribute malware. It then profiles two specific malware cases, Darkmarket and Mebroot, with Mebroot being an advanced rootkit that hides in the master boot record to stealthily download banking trojans and remain undetectable. The document outlines how security company F-Secure works to analyze hundreds of thousands of daily malware samples through an automated research flow to develop detections and protect users in real-time.