Access control is a keystone in conventional approaches to protecting personal information. Lately, however, there is a great deal of uncertainty about whether big data repositories such as “data lakes” do in fact contain personal information, and whether access control is possible in these unstructured environments. Does access control still have any relevance in the world of big data? Do …

Corporate big data initiatives are collecting massive volumes of personal data, largely for marketing purposes. There is a great deal of confusion about how these practices fit with privacy regulations. Are there any clear ground rules for big data privacy? The metadata problem We live our daily lives around a set of passwords: passwords for our phones, bank accounts, computers, …