  A hidden sector that kinetically mixes with the Minimal Supersymmetric
Standard Model provides simple and well-motivated dark matter candidates that
possess many of the properties of a traditional weakly interacting massive
particle (WIMP). These supersymmetric constructions can also provide a natural
explanation for why the dark matter is at the weak scale - even if it resides
in a hidden sector. In the hidden sector, a natural pattern of symmetry
breaking generally makes particles and their superpartners lie around the same
mass scale, opening novel possibilities for a variety of cosmological histories
and complex indirect detection signatures.
