Keep your software up-to-date. Computer hackers are always finding new ways to penetrate the defenses of your software programs. Software vendors respond with patches that close newly found security holes. To stay protected, you need to download and install patches for both your operating system and your software applications whenever they become available. Software patches or updates often address a problem or vulnerability within a program.
Sometimes, vendors will release an upgraded version of their software, although they may refer to the upgrade as a patch. It is important to install a patch as soon as possible to protect your computer from attackers who would take advantage of the vulnerability. Attackers may target vulnerabilities for months or even years after patches are available. Some software will automatically check for updates. If automatic updates are not available, check your software vendors' websites periodically for updates.