Measurements and understanding of fundamental properties of hot and dense nuclear matter with HADES

Heavy ion collisions at few GeV per nucleon energy range according to microscopic transport model calculations, create matter with densities several times larger that the ground density and heated to temperatures of 90 MeV. At such conditions the fundamental properties of the particles might be modified. Promising observables are the rare (multi-) strange hadrons and dileptons. The High Acceptance DiElectron Spectrometer was designed to measure rare and penetrating probes. It is a fixed target experiment located at SIS18 accelerator at GSI, Darmstadt, Germany. Recent results on dileptons and strangeness production in Au+Au collisions at center of mass energy √sNN = 2.42 GeV are presented. Moreover, future experiments and upgrades of the apparatus are discussed.