Sascha Anderson was a key figure in the underground art scene of the GDR. However, once the Stasi files were opened post-1989, it was discovered that he had used his position to inform on his contemporaries. The Hungarian author Péter Nádas wrote an essay reflecting on this discovery, which is available in English. See Péter Nádas, “Our Poor, Poor Sascha Anderson,” Common Knowledge 8, no. 3 (Fall 2002): 526–47.