It does't matter if you consider a hero or a traitor the fact is like Vanunu she KNOWINGLY chose to break the law. You break the law can't complain when your punished. If you break into somebodies home and steal their valuables because you need money to buy food for your family because your broke. Some people may feel sympathy for you because of your motive but at the end of the day your just as guilty as somebody who broke in just because they want to get rich. Motive means nothing actions mean everything and whatever their motives Vanunu, Kamm both broke the law and Blau knew he shouldn't print it let alone refuse to hand the documents over to the authorities.
from the article: Court rejects Anat Kamm's plea to 'get some air'