"I used to hate taking out the trash from a computer room I worked in, but I now appreciate that allowing cleaning staff into that space might not have been a good idea in a nuclear power plant."
Steve, your comment here brings to mind one subtle threat to security and privacy that I have been aware of for decades. My wife and I have shared a home office for over 40 years while she ran a business and I did off-hours support as a DBA. As we work with our data and that of others, even with multiple monitors on several systems, there is always some paper laying around that contains unsecured data. The tendency is to just toss the paper into the waste basket and send it out with the trash.
Even things like paper billings often give away two of the three security items since they contain accounts numbers and often email addresses that are used for logins to private accounts, leaving only the password unknown.
Another one that comes to mind is my constant use of sticky notes to jot down things I need to remember for a few minutes. Looking in front of me, I see a sticky note that contains the account numbers for four accounts.
We have always kept a paper shredder in our office and use it faithfully. It is close at hand and prevents our personal information from going into the public.
One of the best days of my IT career was they day I told my boss if the problem was so simple he should go fix it himself.