The more tangible worry for the Meltdown and Spectre fixes was that they would slow down the computer. Luckily, this turns out to have been somewhat exaggerated.
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Google and Microsoft have identified a CPU flaw, but the fix can slow machines down. It leaves some users having to make a choice between security or performance.
Meltdown and Spectre are big security issues, and they affect almost every computer. For Linux (and Ubuntu) there are already a lot of updates available to fight Meltdown and Spectre. You only need to install them.
One of the scariest realities of the Meltdown and Spectre vulnerabilities is just how widespread they are. Use these simple tools to see how your Linux PC is affected and what you can do.
While Microsoft has released emergency updates to patch Meltdown and Spectre bugs. considering the complexity of the bugs, your Windows system may or may not be fully patched.