The properties of strange pseudoscalar and vectors mesons as well as strange
baryon resonances in dense matter are reviewed. Some open questions on the
properties of strange hadrons in medium are addressed, such as the experimental
signatures of in-medium effects coming from the hadronic phase on the final
observables in heavy-ion collisions for the experimental conditions at SIS,
RHIC and LHC energies.Comment: 6 pages, 4 figures, contribution based on a plenary talk at
Strangeness in Quark Matter (SQM2017), 10-15 July 2017, Utrecht (The
Netherlands