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As Flatcar Container Linux is a part of many organization’s critical infrastructure, we understand that users place a great deal of trust in us to ensure that security is taken seriously.

As such, we place top priority on making sure that Flatcar gets security updates in a timely manner.

Disclosure

To reporting found security issues or concerns in Flatcar, please email [email protected]

Please include:

  • versions of tools and components involved
  • reproducer or proof-of-concept

Urgent issues

If you are reporting an issue that needs to be urgently looked at, please prepend [URGENT] to the subject line.

Signing keys

Verify images using the following signing key:

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