Those who have concerns about privacy on smartphones often focus on apps that track users’ internet browsing history or even their movements through GPS. But while such violations of privacy are becoming more well-known to users, many others appear to be unaware that some apps have open access to their contact lists. For instance, therapist Gabriela Buendia was shocked to discover that the payment app Venmo had shared a list of her phone contacts as well as data about everyone Continue reading →