/usr/lib/python3/dist-packages/plainbox/impl/secure/ is in python3-plainbox 0.5.3-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/plainbox/impl/secure/__init__.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/config.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/job.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/launcher1.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/plugins.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/providers/
/usr/lib/python3/dist-packages/plainbox/impl/secure/providers/__init__.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/providers/test_v1.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/providers/v1.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/qualifiers.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/rfc822.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/test_config.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/test_job.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/test_launcher1.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/test_plugins.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/test_qualifiers.py
/usr/lib/python3/dist-packages/plainbox/impl/secure/test_rfc822.py