I agree to some extent, that's why no one put a password to the telnet based LXI SCPI command interface. But a weak password maybe useful sometimes, to prevent

I agree to some extent, that's why no one put a password to the telnet based LXI SCPI command interface. But a weak password maybe useful sometimes, to prevent your coworker accidentally connect to the wrong equipment and mess up one's experiment. Here it's never meant to deter a hostile coworker, in that case one reports to one's superior rather than rely on the password which is always stickered to the scope itself (in my lab).