Err:6 http://download.opensuse.org/repositories/security:/zeek/Debian_10  InRelease
  The following signatures were invalid: EXPKEYSIG 69D1B2AAEE3D166A security OBS Project <security@build.opensuse.org>
Reading package lists... Done
W: GPG error: http://download.opensuse.org/repositories/security:/zeek/Debian_10  InRelease: The following signatures were invalid: EXPKEYSIG 69D1B2AAEE3D166A security OBS Project <security@build.opensuse.org>
E: The repository 'http://download.opensuse.org/repositories/security:/zeek/Debian_10  InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.