Kerstin Kaiser (born 16 July 1960 in  Stralsund) is a German politician for the left wing party, Die Linke who worked as a teacher at the party school of the Socialist Unity Party of Germany and  became an informer for the Stasi  under the code name "Kathrin".
Kerstin Kaiser (born 16 July 1960 in Stralsund) is a German politician for the left wing party The Left. Following her studies of Russian at the Leningrad University (now the Saint Petersburg State University), she worked as a teacher at the party school of the Socialist Unity Party of Germany (SED) (Parteischule beim ZK der SED "Karl Liebknecht"). She became an informer for the Stasi already as a student in 1979, under the code name "Kathrin". 
