Install latest patches & software fixes
All software operating system and application software (e.g. word processor, spreadsheet) are very complex and it is impossible for the manufacturer (software authors) to test “absolutely everything” because it is impractical to do so.
Therefore when the software ships there are numerous bugs or flaws in the software. Attackers can exploit these weaknesses to compromise your computer system. As the bugs or flaws are discovered the manufacturers issue “patches” or “bug fixes”. These are typically published on their website. Most major operating system vendors such as Microsoft and Apple have automatic update facilities which need to be enabled either in the operating system by visiting the system control panel. For older versions of your operating system you would typically have to visit the manufacturers' website to obtain the latest patches.
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