  In these lectures, we review the status of the Curci-Ferrari model as a
phenomenological approach to Landau gauge-fixed YM theories in the infrared.
More precisely, after discussing some of the general properties of the model,
we explain in full detail the evaluation of the one-loop two-point correlators
that allowed for a successful comparison to the corresponding Landau-gauge
lattice data. We also review the renormalization group flow of the model which
controls its fate at high and low momentum scales.
