We now know that Facebook's Platform initiative opened the door for Cambridge Analytica to gain unauthorized access to the personal data of 87 million Facebook members. This massive breach of trust prompted last month's Congressional hearings and caused the FTC to reopen a full-scale investigation of whether Facebook violated its 2011 consent decree. Facing widespread public outrage, Zuckerberg provided perhaps his most polished version of Facebook's apologia in his opening statement to Congress: