The birth of gravitational wave astronomy has been triggered by the detection of the first signal produced by the merger of two compact objects. The following discoveries by the Earth-based network of advanced interferometers had a significant impact in many fields of science: astrophysics, cosmology, nuclear physics and fundamental physics. However, Compact Binaries Coalescence signals are not the only type of gravitational waves detectable by LIGO, Virgo, and KAGRA. An interesting family of yet undetected signals, and the ones that I will consider in this review, are the so-called continuous waves, paradigmatically exemplified by the gravitational radiation emitted by galactic, fast-spinning isolated neutron stars with a certain degree of asymmetry in its mass distribution. In this work, I will review the status and the latest results from Advanced detectors data.