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  • There is nothing wrong with Debian's default /etc/securetty file as long as using a secure root password.
  • A compromised user account user user could be infected with a keylogger which could read the sudo password and thereby acquire root access.
  • A secure password for user user and root leads to compromised non-root users (such as user sdwdate in case sdwdate gets exploited) to requiring a local privileged escalation exploit in order to acquire root compromise. Root password bruteforcing is not possible.
  • Only one user account with password and no root account login supported by default also means the user has only to remember and secure one rather than two strong passwords.
  • Any graphical application can see what any user is typing in any other graphical application for any user. [1]
  • user documentation: Root

Forum discussions:

Misc[edit]

When login in tty1 as root, not counting as failed login attempt fortunately for our pam_tally2 implementation in security-misc.

Footnotes[edit]

  1. Quote Joanna Rutkowska, security researcher, founder and advisor (formerly architecture, security, and development) of Qubes OS:

    One application can sniff or inject keystrokes to another one, can take snapshots of the screen occupied by windows belonging to another one, etc.


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