Before we go any further, let's investigate why keeping our devices updated is important.The first and probably the most important reason is security.By keeping your software up to date, you are lowering the chances of hitting these bugs.To update software in Raspbian, you can use the apt tool in a terminal.Open a terminal window from the taskbar or application menu: First, update your system's package list by entering the following command: Generally speaking, doing this regularly will keep your installation up to date for the particular major Raspbian release you are using (e.g. It will not update from one major release to another, for example, Stretch to Buster.However, there are occasional changes made in the Foundation's Raspbian image that require manual intervention, for example a newly introduced package.
The only way to mitigate these exploits as a user of Raspbian is to keep your software up to date, as the upstream repositories track CVEs closely and try to mitigate them quickly.
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A device running Raspbian contains millions lines of code that you rely on.
Over time, these millions lines of code will expose well-known vulnerabilities known as Common Vulnerabilities and Exposures (CVE), which are documented in publicly available databases meaning that they are easy to exploit.