The goal is always to stay a step ahead of the attackers. Once a patch or update is released, the clock is ticking--it's really only a matter of time until an exploit is crafted to attack the underlying vulnerability. That's why it's important to keep your PC updated with the latest patches.
Next time you see that notification that Windows needs to restart to complete the installation of patches and updates, don't ignore it. Save your work, and reboot. You can thank me later.
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