What would you consider as good evidence of a backdoor? Apple got plenty of media coverup for their part in Operation Triangulation, and even hardware experts w

What would you consider as good evidence of a backdoor? Apple got plenty of media coverup for their part in Operation Triangulation, and even hardware experts were defending it as a fuckup rather than a backdoor, providing it with great plausible deniability. Do you count it as evidence? If not, I can easily see any other company leaving these non-backdoors in their hardware with no damage to their reputation.