@conference {755, title = {The optimal attack to histogram-based forensic detectors is simple(x)}, booktitle = {IEEE International Workshop on Information Forensics and Security (WIFS)}, year = {2014}, month = {12/2014}, pages = {137-142}, address = {Atlanta, GA}, keywords = {compass, Multimedia security}, author = {Pedro Comesa{\~n}a and Fernando P{\'e}rez-Gonz{\'a}lez} }