Understanding the nature of dark matter is crucial in modern physics.
Among the diff?erent possibilities, the idea that dark matter could be con-
ned into a `dark sector' is attracting growing interest in recent years.
A combination of diff?erent standard model anomalies can be solved by
introducing a mediator particle with mass lower than the weak scale, connecting the dark sector to the standard model.
We will focus our attention on the dark photon hypothesis, reviewing the
experimental status and future prospects of dark photon searches, with
particular attention to the PADME experiment at Laboratori Nazionali