Both Google and Samsung are rolling out new processes to issue security updates for Android devices, like the Samsung Galaxy S6 and S6 Edge. Jung Yeon-Je/AFP/Getty Images hide caption

itoggle caption Jung Yeon-Je/AFP/Getty Images

Apple CEO Tim Cook speaks Sept. 9 during an event at the Flint Center for the Performing Arts in Cupertino, Calif., where he unveiled the Apple Watch. The device officially goes on sale Monday. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

The Samsung Galaxy Mega (from left), Samsung Galaxy S4 and Apple iPhone 5 are shown. Apple is expected to announce larger models of its smartphone on Tuesday. Richard Drew/AP hide caption

itoggle caption Richard Drew/AP

One of the earliest iPhone prototypes. This system was pieced together to test early versions of the iPhone's software. Courtesy of Apple hide caption

itoggle caption Courtesy of Apple