A Triple J radio host who was allegedly stalked for eight months then attacked on air has lambasted the ABC, saying the public broadcaster failed to inform security of her concerns about the man, did not make any changes in the wake of her alleged attack and failed to provide her with a policy in relation to sexual violence.

Police allege Kieren Gallagher stalked former Triple J lunch presenter Gen Fricker for eight months. He broke into the public broadcaster's Ultimo premises in September 2018 by tailgating a staff member and made his way into the studio where he allegedly grabbed and kissed Ms Fricker as a song played.

Former Triple J host Gen Fricker. Credit:Kate Geraghty

Mr Gallagher is alleged to have fled the building, and was arrested several days later at Central Station where he had been sleeping rough.

It is alleged Mr Gallagher first approached Ms Fricker, who has since left the ABC, at a stand-up comedy show unrelated to her job at the ABC.