How can I install the Intel microcode?

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19

Intel and Amd microcode are installed by default as mitigation for the spectre & meltdown cpu vulnerabilities.

apt-cache policy intel-microcode
intel-microcode:
  Installed: 3.20210608.0ubuntu0.20.04.1
  Candidate: 3.20210608.0ubuntu0.20.04.1
  Version table:
 *** 3.20210608.0ubuntu0.20.04.1 500
        500 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
        100 /var/lib/dpkg/status
     3.20191115.1ubuntu3 500
        500 http://us.archive.ubuntu.com/ubuntu focal/main amd64 Packages
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