I long back to the days when we said security is compromised when a adversary had physical access and that zero point many zero's 1 dollar jumper physically set

I long back to the days when we said security is compromised when a adversary had physical access and that zero point many zero's 1 dollar jumper physically setting things to read only works just fine. Today I primarily don't trust my systems because of the manufacturers seeing me -the owner- as the #1 security risk and favoring corporate interest over client interest.