I’m pretty sure there are rules of informational hygiene for cases like this, and they mostly grate on instincts of any geek obsessed with having all the data n

I’m pretty sure there are rules of informational hygiene for cases like this, and they mostly grate on instincts of any geek obsessed with having all the data neatly organized, cross-referenced, and persisted. You can add any number of security layers, but you should always presume someone might get their hands onto whatever you’re working on at the moment in cleartext and you want any damage to be minimal.