Bruce Schneier (; born January 15, 1963) is an American cryptographer, computer security professional, privacy specialist and writer. Schneier is a fellow at the Berkman Center for Internet & Society at Harvard Law School, and a program fellow at the New America Foundation’s Open Technology Institute. He worked for IBM since they acquired Resilient Systems where Schneier was CTO until he left at the end of June 2019. He is the author of several books on general security topics, computer security and cryptography. Schneier is also a contributing writer for The Guardian news organization.