Henning Frunder was jailed in East Germany after his plans to leave came to attention of Stasi . When the Wall fell in 1989 , Stasi agents tried to destroy records which would reveal informants . A painstaking operation to piece together more than 600 million pieces of paper continues . The German government has been accused by human rights groups and some politicians of using secret files on dissidents as a way of intimidating critics into silence.
Henning Frunder was jailed in East Germany after his plans to leave came to attention of Stasi . When the Wall fell in 1989 , Stasi agents tried to destroy records which would reveal informants . A painstaking operation to piece together more than 600 million pieces of paper continues . Frunder 's name , and the name of the man who betrayed him , were revealed .