Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity-greeter (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1057437

Title:
  login UI is prone to exposing password

Status in Ayatana Design:
  New
Status in “unity-greeter” package in Ubuntu:
  Confirmed

Bug description:
  The Unity login screen employs a single field that is used for both
  login name and password entry.  It's fairly easy to get confused as to
  the current mode and enter your password when login name is expected,
  thereby exposing your password to onlookers.

  Here are some scenarios leading to this confusion:

      * password re-entry (for general login) -- upon unsuccessful
  password attempt, the user might assume that only password is being
  reprompted, when actually the login name must be entered again.

      * enumerated vs. general login -- the user may typically use his
  enumerated login (where username selected and only password is typed)
  and fail to notice that general login has been selected (perhaps by
  another person tampering with the login screen).  He'll type his
  password when login name is expected.

  For security reasons the login UI needs to be very explicit about what
  fields are used for password.  Textual indicators (e.g. grayed
  "Password" placeholder in field) don't seem to be a distinctive enough
  cue-- my guess is people don't pay attention to login screen text
  beyond their first encounter.  A spacial separation is warranted.
  Using a single, modal field for both login and password appears
  especially error prone.

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