Edit: I looked it up; California, too, is a community property state. Theresa was absolutely an effective board member.
I just drafted a stock purchase agreement for my business partner and I on our new startup and one of the basic boilerplate additions to the stock purchase / vesting agreement is a spousal agreement to the terms of the purchase.
The communal property law only relates during a divorce were the shares are split up between the couple by the courts. Any decently written stock purchase agreement has a first right of refusal for the company to purchase back those shares in the event of an involuntary transfer.
Be paranoid. Encrypt it if you don't want people to snoop.
My dad works for IBM doing mainframe repair and installation. He's seen his coworkers fired for allowing unauthorized individuals to use their company laptops. They've gone even further in the last few years in making unauthorized software a fireable offense.
Granted, two data points isn't a lot but there are companies that have enforced policies to prevent sensitive information from leaking.
I should also point out both my dad and I do significant amounts of work from home and we are both required by our companies to use full disk encryption.
Which is different from saying that the company would fire them if the spouse used their inside-access to harm the company in any way.
1. http://www.officedepot.com/a/browse/laptop-privacy-filters/N...
Very wrong.
In short, many vendors go to great expense to vet, audit, and limit the number of employees who could potentially access customer data. Some will geo-locate physically separate systems under separate administration according to regional necessity.
Disclosure: works for such a vendor.