For the past eighteen months, the Greek artist who calls himself Stefanos has been hacking euros, sketching images of the economic crisis in Greece onto banknotes. ‘Over the last five years the economy has hatched violence and social decay,’ he told me. ‘I’m using a European document, that is in cross-border circulation, to bomb public property from the comfort of my home.’ The notes depict lynchings, people collapsing, mass hysteria. The project was kickstarted by news of a suicide. ‘I always use black ink ball-pen and draw human figures using headlines from the media, whenever violence or poverty is reported, I transfer the message on the medium.’ Stefanos scans the notes, posts the images on his website and then puts them back into circulation, messages in bottles that may wash up on the shores of northern Europe. 'A currency should reflect the reality of the era it represents,' he says.