 He was made chief of counter-intelligence at IG Farben in 1940 and a "Wehrwirtschaftsführer" in 1941.According to Diarmuid Jeffreys, Schneider was made aware of the Holocaust in early 1943 when Walter Dürrfeld told him during a visit to Buna Werke in early 1943.Brought to trial for plunder, slavery and SS membership at the IG Farben trial, Schneider was acquitted on all counts.