Massive and high-profile customer data breaches have spurred a broader discussion about data security online recently. On Friday, it was revealed that popular question and answer site Quora was attacked by a third party, with the data of 100 million users potentially compromised
Even more alarming, a four-year-long hack
of Marriott's reservation system exposed the personal information of 500 million (yes, more than the entire population of the United States) customers, including some individual's passport information, posing a potential identity theft and national security risk. These breaches—of a wildly successful startup, and of a leading global corporation—demonstrate that securing data from attacks is a genuinely demanding undertaking.