Re: Safe enough - IF no third party code
These are our industries dirty secrets tucked away and not spoken of openly much because they make the life of people running the hardware easier on a day to day basis.
If an engineer at the company I work for were to create such a backdoor in software that shipped to a customer they wouldn't just be looking a dismissal, they'd probably be looking for a lawyer to keep them out of jail. That's the kind of 'dirty secret' that can kill a company. We do design, code and security review with the precise aim of making sure that such stuff doesn't get put in.