Not at all. Those were bugs. This is/was a feature. For this, there'd have to be a specific function in some Fortinet products for handling the special chall

Not at all. Those were bugs. This is/was a feature. For this, there'd have to be a specific function in some Fortinet products for handling the special challenge/response backdoor. A magic string like `"FGTAbc11*xy+Qqz27"` in firewall source code is going to jump out at you. Unlike an extra goto...