That OPM hack? it isn't bad, it's far worse:

Whoever now holds OPM’s records possesses something like the Holy Grail from a CI perspective. They can target Americans in their database for recruitment or influence. After all, they know their vices, every last one — the gambling habit, the inability to pay bills on time, the spats with former spouses, the taste for something sexual on the side (perhaps with someone of a different gender than your normal partner) — since all that is recorded in security clearance paperwork (to get an idea of how detailed this gets, you can see the form, called an SF86, here).

I've looked up the OPM From SF-86 for security clearances, and the PDF is 115 pages of the last 7 years, and queries you about your arrest record, drug use, financial issues, mental health issues among other things.

Also, a federal employee union believes, based on internal OPM discussion they've taken part with, that the data stolen pertains to all civilian employees, military personnel, and retirees. Likely includes all temporary workers hired for the census. Thats a very large number of people.

Note to self: security clearance? Do. Not. Want.

Here's the linkie to the union I referenced above.