Microsoft Corp warned that cybercriminals have attacked users of its Office software for Windows PCs, exploiting a programing flaw that the software giant has yet to repair. The world's largest software maker issued the warning on Tuesday as it released patches to address nine other security holes in its software.
Cybercriminals target Microsoft programs because they are so widely used, allowing them to go after the largest number of potential victims with one set of code. (Windows runs more than 90 percent of the world's PCs. Office has some 500 million users).