When Is NSA Hacking OK? | US News, 23 May 2016

Bruce Schneier, a fellow at Harvard University’s Berkman Center for Internet and Society, says “there is no clear answer” on when the government is justified in keeping flaws to itself for its own hacking purposes, in part because more information is needed on how often flaws are disclosed to companies running the software.

Source: When Is NSA Hacking OK? | US News