Re: CYA
Found one. Me. I'm here. And I blame the procedure and the stupid non-adjustable-for-me mobile screensaver after 30 seconds pushed by company policy (among other things).
Fire up the laptop, log in (here no MFA needed since by definition no internet without VPN), unlock the phone beforehand, VPN, asks for MFA 8 digit number, and I see the timer below 5s, so I tap somewhere on the phone, if it has not already locked, wait for the next code, want to type it in, then something from autostart ate one of the digits since it HAD to take the focus for a ten'th of a second at the right time, me cursing, redo from start....
And add when the VPN acts up, takes a bit too long to ask for the RSA key, the phone is already locked since 30 seconds, and an enforced alphanumeric 10 digit code is needed to unlock the phone. Great to type if you got pre-teen fingers, which I don't. So I have to enter the phone code twice quite often. Oh, the VPN timed out waiting for the code. Redo from start.
Not all implementations are in my hand, but customers hand, customers laptop, customers phone for MFA... Some MFA needs to be relaxed, in my case the phone-lock-enforcement changed to two minutes so I don't have to tap it constantly just to keep it awake... Or just change it to certificate VPN, which is by far the most relaxed...
(By the way: Of course the laptop has a bitlocker pin, length min 10 and alphanumeric enforced, but those keys are big enough, and the wrong language layout is something I can handle, so no problem there)