Filling bogus information, is actually illegal. Either ways, the National Commission on Data Processing and Liberties is your friend in the story (CNIL in Fren

Filling bogus information, is actually illegal. Either ways, the National Commission on Data Processing and Liberties is your friend in the story (CNIL in French). They go to great length to regulate access to your data. There are several cases of national agencies being forced to collect less data thanks to them.