Bruce Schneier's blog: https://www.schneier.com/

Wikipedia: https://en.wikipedia.org/wiki/Bruce_Schneier

From Bruce Schneier's bio at the Harvard Kennedy School (https://www.hks.harvard.edu/faculty/bruce-schneier)

Bruce Schneier is an internationally renowned security technologist, called a "security guru" by The Economist.  He is the author of 14 books -- including the New York Times best-seller Data and Goliath: The Hidden Battles to Collect Your Data and Control Your World -- as well as hundreds of articles, essays, and academic papers.  His influential newsletter "Crypto-Gram" and blog "Schneier on Security" are read by over 250,000 people.  Schneier is a fellow at the Berkman Center for Internet and Society at Harvard University, a fellow at the Belfer Center at Harvard's Kennedy School of Government, and a board member of the Electronic Frontier Foundation.  He is also a special advisor to IBM Security and the Chief Technology Officer of Resilient.