From sjoemelen (“to cheat, to fudge”) + software (“software”). <span class="searchmatch">sjoemelsoftware</span> m (uncountable) software that skews test results sjoemelsoftwareschandaal...
From German schummeln (“to cheat, to swindle”). sjoemelen (intransitive) to cheat, to manipulate besjoemelen gesjoemel sjoemelaar <span class="searchmatch">sjoemelsoftware</span>...