/usr/lib/x86_64-linux-gnu/libsiscone.so is in libsiscone-dev 2.0.6-1.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsiscone.so.0.0.0
/usr/lib/x86_64-linux-gnu/libsiscone.so.0.0.0