  In view of the IceCube's 6-year high-energy starting events (HESE) sample, we
revisit the possibility that the updated data may be better explained by a
combination of neutrino fluxes from dark matter decay and an isotropic
astrophysical power-law than purely by the latter. We find that the combined
two-component flux qualitatively improves the fit to the observed data over a
purely astrophysical one, and discuss how these updated fits compare against a
similar analysis done with the 4-year HESE data. We also update fits involving
dark matter decay via multiple channels, without any contribution from the
astrophysical flux. We find that a DM-only explanation is not excluded by
neutrino data alone. Finally, we also consider the possibility of a signal from
dark matter annihilations and perform analogous analyses to the case of decays,
commenting on its implications.
