Hidden sectors that comprise new strong interactions, but interact feebly with the Standard Model, are a broadly motivated possibility for new physics. In particular, a new confining sector at scales between hundreds of MeV and tens of GeV may hold the key to outstanding theoretical questions, such as the naturalness of the weak scale or the dark matter puzzle. The LHC plays a critical role in probing these scenarios, yet the associated signatures generically require targeted strategies, ranging from prompt decays involving low-pT objects, to long-lived particle signals. Taking as case in point a dark QCD coupled to the visible sector through the Higgs and Z portals, I will discuss several searches where important progress could be achieved, and review some related theoretical developments.
