...
- Keep the most vulnerable applications up-to-date. This includes Adobe Reader, Adobe Acrobat, Adobe Flash Player, Adobe Shockwave, Adobe Air, Java and RealPlayer. These applications are known to be vulnerable to attacks so keeping them patched greatly decreases the risk of computers being infected.
- Important and high applications, like internet browsers (Firefox, Internet Explorer, Opera, Safari, Google Chrome) and operating systems (for example, Mac OS X and Windows 7) should also be kept up-to-date. Since they are common and frequently used, these types of applications are frequent targets for attacks.
...