Very good article! Kol ha'kavod! That is exactly my point of view. Blau is not endangering the lives of anyone; he is endangering the careers of some corrupt people in the IDF. To prevent the investigation of the crime that represents ignoring the High Court ruling, they are diverting the public attention by selling the "state security" kool-aid. Blau is trying to open the eyes of Israelis to see how some people in their army behave, how much they care for the law. True, he broke the law to get that information; but in such case tt is not only Blau who must be under investigation.
from the article: How the Shin Bet broke its deal with Haaretz