Problems distinguishing downloaded certificate files
Downloaded PGP or S/MIME certificate files will have the same name for the public and private key. This might lead to accidentally disclosing the private key.
Upgrade to the latest available OTRS patch level (https://ftp.otrs.org/pub/otrs/).
As a workaround, you can replace the affected files (see below for download).
Note on OTRS 5: There is no official OTRS release for this fix but you can use the OTRS 5 patch download below.
ATTENTION: Please check if any of these files have been changed in your OTRS installation by additional add-ons. In that case you MUST NOT simply overwrite the files with the ones provided below. Please contact us instead.