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When I visit Microsoft.com, the LastPass dropdown lists my username/password for login.live.com. It does something similar for Playstation.com and several other sites.

How does it know? Are these hard-coded into LastPass, or is there some markup or HTTP header or something on Live.com that specifies its credentials can be shared with other domains?

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  • when you go to microsoft.com (as of Aug 31 2015) the "sign in" link at the top right takes you to a sign in page that has a URL beginning with "login.live.com" Is this what you see? if not please confirm that the URL of the sign in page is something other than login.live.com
    – Owen
    Aug 31, 2015 at 16:46
  • This is a vendor-support question, not an InfoSec question.
    – schroeder
    Aug 31, 2015 at 17:16
  • @schroeder: Whether a question is "vendor support" or not shouldn't depend on the answer. The answer here happens to be "they hard-coded it," but I had no way of knowing that without knowing the answer. It could very easily have been an HTML or HTTP feature I wasn't aware of. Aug 31, 2015 at 18:38
  • Either way, there is no InfoSec impact. If it was HTML or HTTP, then the question should be asked on another site, like SuperUser, or such.
    – schroeder
    Aug 31, 2015 at 18:57

1 Answer 1

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Lastpass uses a preconfigured and extensible set of site aliases to make two or more domains equivalent.

Here is a snapshot from my account settings page. YMMV.

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