Microsoft Passport is Microsoft’s highly promoted identity management and single sign-on system. Microsoft has adopted Passport internally for most of its products that need to identify users. But Passport vulnerabilities have been big news in the past: People who have found them have made the front page of The New York Times. The problem, of course, is that it’s hard to stop using Passport. But once the vulnerability is known, the black hats are free to start exploiting it. And once they know where to look, more vulnerabilities might be found.”]
Source: https://www.csoonline.com/article/2118239/beyond-passport-vulnerabilities.html