  Neutrinos may be the harbingers of new dark sectors, since the renormalizable
neutrino portal allows for their interactions with hidden new physics. We
propose here to use this fact to connect the generation of neutrino masses to a
light dark sector, charged under a new $U(1)_{\cal D}$ dark gauge symmetry. We
introduce the minimal number of dark fields to obtain an anomaly free theory
with spontaneous breaking of the dark symmetry, and obtain automatically the
inverse seesaw Lagrangian. In addition, the so-called $\mu$-term of the inverse
seesaw is dynamically generated and technically natural in this framework. As a
bonus, the new light dark gauge boson can provide a possible explanation to the
MiniBooNE anomaly.
