White paper: Malware delivery of viruses, spyware, Trojans, bots, rootkits, and fake security software has exploded in recent years. 74 percent of all malware spotted in the third quarter of 2008 came from visits to compromised Web sites. Drive by malware delivery is of increased appeal to cybercriminals simply because it is, in general, a more stealthy form of infection that results in more successful attacks. The amount of sophisticated, behind-the-scenes communication that occurs when Web browsers quietly interact with data stored on the PC, with desktop applications, and with Web servers.”]
Source: https://securelist.com/drive-by-downloads-the-web-under-siege/36245/