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Operating system updates
Regular operating system updates are the first line of defense in keeping your computer as secure as possible. Combined with routine system maintenance, updates and patches help prevent data loss, viruses and other potential risks. Check your software vendors' website on a regular basis for new security upgrades, or make use of the automated patching features offered by many software companies.
Microsoft Windows and Apple's MacOS are the most common operating systems. Some enthusiasts use an operating system called Linux, but it's less common than the mainstream operating systems.
Security software