Adobe Acrobat and Reader have assumed the roles of most commonly targeted file types to install malware this year, F-Secure said Wednesday. The security firm studied 663 attack files and determined that 49 percent involved the popular PDF reader software, while 39 percent were aimed at Microsoft Word. Last year, Word was targeted in 35 percent of 1,968 attacks, and the Adobe products made up 29 percent of file exploits. F-Secure attributed the shift to this year's two widely publicized Adobe zero-day exploits. — DK