In these years the images by the anonymous urban graffiti, known to the world as Bansky, went viral. Now, to go viral is the video that he shared on youtube, revealing the shredder hidden inside the frame of one of his works and activated as soon as it was sold by Sotheby’s a few days ago. Parameters that we feel as reassuring are twisted. The borders of the ephemeral are not even secure within an old style frame.