Existing research on Authorship Attribution (AA) focuses on texts for which a\nlot of data is available (e.g novels), mainly in English. We approach AA via\nAuthorship Verification on short Italian texts in two novel datasets, and\nanalyze the interaction between genre, topic, gender and length. Results show\nthat AV is feasible even with little data, but more evidence helps. Gender and\ntopic can be indicative clues, and if not controlled for, they might overtake\nmore specific aspects of personal style.\n