The researcher’s failure to protect research subjects from deductive disclosure is the primary ethical violation in which of the following studies?

I believe the answer is: Harvard "Tastes, Ties, and Time (T3)" study (2006-2009)" study

In that study, the researchers collected many detailed personal information from the social media of the undergraduates without their consent and observe those students over four years. 
Their action is considered as a breach of personal privacy which expose the subjects to the risk of identity theft.