Now Microsoft is extending MFA support into Outlook and the rest of the Office 2013 client applications, with a few caveats. ![]() Microsoft bought into that trend with their 2012 purchase of PhoneFactor, which is now integrated into Azure. I was wrong when I assumed that smart cards would become ubiquitous as a second authentication factor instead, the “something you have” role is increasingly often filled by a mobile phone that can receive SMS messages. I stand by the second half of that statement: reusable passwords are still evil, 14 years later, but at least the word is getting out, and multi-factor authentication is becoming more and more common in both consumer and business systems. I’m going to let you in on a secret that’s little discussed outside the security world: reusable passwords are evil. Back in February 2000, in my long-forgotten column for TechNet, here’s what I said about single-factor passwords: ![]() ![]() I don’t usually put on my old man hat, but indulge me for a second.
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