/usr/lib/x86_64-linux-gnu/libgensec.so is in libgensec-dev 4.0.0~alpha18.dfsg1-4ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgensec.so.0.0.1
/usr/lib/x86_64-linux-gnu/libgensec.so.0.0.1